By Jillian F. Hayes, Esq. · Last updated May 20, 2026

The Three Categories of Damages

California product liability damages fall into three categories: economic, non-economic, and punitive. The categories matter because they are governed by different rules of proof, different allocation rules among defendants, and different evidentiary requirements.

Economic Damages: The Numbers You Can Prove

Economic damages compensate for financial losses that have a specific dollar amount or can be calculated from one. They are the foundation of most product liability cases because they are easier to prove and harder to dispute.

Past medical expenses

Every emergency room visit, surgery, hospital stay, doctor's appointment, prescription, physical therapy session, and rehabilitation cost. California's Howell v. Hamilton Meats (2011) 52 Cal.4th 541 decision restricts recovery of medical expenses to the amount actually paid or owed, rather than the inflated "billed" amount that insurers negotiate down. Plaintiffs document this with itemized bills, EOBs from insurance, and lien documents.

Future medical expenses

The expected cost of ongoing treatment, future surgeries, long-term care, durable medical equipment, prescriptions, and home modifications. A life-care planner usually prepares a detailed projection, and an economist reduces the projected costs to present value. For serious injuries, future medical can be the largest category of damages.

Lost wages and income

Wages already lost from inability to work, documented through pay stubs, tax returns, and employer records. For self-employed plaintiffs, profit and loss statements and prior-year tax returns establish the baseline.

Loss of earning capacity

The difference between what the plaintiff could have earned absent the injury and what they will be able to earn going forward. This includes promotions and raises that were on a reasonable trajectory before the injury. Vocational experts and economists typically build the analysis.

Property damage and out-of-pocket costs

Any property destroyed by the defective product (a house damaged by a battery fire, a vehicle ruined by a defective component), plus transportation costs to medical appointments, home modifications, assistive equipment, and other related expenses.

Non-Economic Damages: The Harder Half

Non-economic damages compensate for harms that do not come with a price tag attached. They are real harms (often more important to the injured person than the financial losses), but they are also more contested and more variable.

Physical pain and suffering

The physical pain caused by the injury, the treatment, and the ongoing condition. California Civil Jury Instruction (CACI) 3905A covers this category. There is no formula; the jury determines a reasonable amount based on the nature, duration, and severity of the pain.

Emotional distress and mental suffering

Anxiety, depression, fear, PTSD, sleep disturbance, loss of confidence, and other psychological consequences. Mental health treatment records help establish these damages, though they are not strictly required.

Loss of enjoyment of life

The inability to participate in activities the plaintiff previously enjoyed: hobbies, sports, parenting activities, travel, social engagement. This category is often substantial for younger plaintiffs whose injuries change the trajectory of their lives.

Disfigurement and scarring

A separately listed item in California jury instructions. Visible scars, especially on the face or hands, carry their own damages independent of pain or emotional distress. Burns, dog bites to children, and surgical scars are common sources.

Loss of consortium

The spouse or registered domestic partner of an injured person has their own claim for loss of consortium: loss of companionship, intimacy, services, and support. This is a separate claim with separate damages, requiring its own pleading.

Proposition 51 and the Allocation of Non-Economic Damages

California voters passed Proposition 51 in 1986. It is codified at Civil Code §1431.2. The rule changed how multiple defendants share responsibility for non-economic damages.

Before Prop 51, if the jury awarded $1 million in non-economic damages and found three defendants liable, any one of them could be required to pay the whole amount. The defendants then sorted out reimbursement among themselves. If one defendant was insolvent, the others made up the difference.

After Prop 51, each defendant pays only its proportionate share of non-economic damages. If a defendant is found 30% at fault, it pays 30% of non-economic damages. No more, no less. If another defendant is insolvent, the plaintiff absorbs that risk.

Economic damages were not changed by Prop 51. Joint and several liability still applies to medical bills, lost wages, and future economic losses. Any defendant can be required to pay the full economic damages, regardless of percentage of fault.

This rule shapes settlement strategy. In a case with one wealthy defendant and several smaller ones, the wealthy defendant pays the full economic damages but only its proportional share of non-economic damages. The plaintiff has to account for that division when evaluating offers.

Punitive Damages: A High Bar With High Payoff

Punitive damages exist to punish defendants who engaged in particularly bad conduct and to deter similar conduct by others. They are not for every case. California Civil Code §3294 requires proof by clear and convincing evidence (a higher standard than the usual preponderance of the evidence) that the defendant acted with:

• Malice: Conduct intended to cause injury or carried on with willful and conscious disregard of the rights or safety of others
• Oppression: Despicable conduct subjecting a person to cruel and unjust hardship in conscious disregard of their rights
• Fraud: Intentional misrepresentation, deceit, or concealment of a material fact

In product liability, the most common path to punitive damages is showing the manufacturer knew of a defect, knew of a serious risk of harm, and consciously chose to continue selling the product without warning or remediation. Internal company documents are typically the strongest evidence. Memos, safety reports, engineering reviews, and internal correspondence about known risks make or break punitive cases.

Federal due process limits put a practical cap on punitive damages. In BMW v. Gore (1996) 517 U.S. 559 and State Farm v. Campbell (2003) 538 U.S. 408, the U.S. Supreme Court held that punitive damages must bear a reasonable relationship to compensatory damages, generally not exceeding a single-digit multiplier in cases without extreme reprehensibility. A 10-to-1 ratio is the rough upper bound for most cases.

Comparative Fault: How the Plaintiff's Conduct Reduces Damages

California follows pure comparative fault under Li v. Yellow Cab Co. (1975) 13 Cal.3d 804. If the jury finds the plaintiff was partly responsible for the injury, the damages are reduced by the plaintiff's percentage of fault. The reduction applies to economic and non-economic damages alike.

In product liability cases, the defendant typically argues comparative fault on grounds like:

• The plaintiff misused the product in a way the manufacturer did not foresee
• The plaintiff ignored adequate warnings
• The plaintiff was intoxicated or distracted at the time of use
• The plaintiff modified the product in a way that affected its safety
• The plaintiff failed to mitigate damages by seeking timely medical care

The defense's challenge is that strict product liability does not turn on whether the defendant was careful. It turns on whether the product was defective. So even when the plaintiff was partially responsible, the product still has to be defective for the case to proceed. The plaintiff's conduct goes to the apportionment of damages, not to the existence of the claim.

"Pure" comparative fault means there is no threshold below which the plaintiff loses entirely. A jury finding the plaintiff 90% at fault still allows recovery of 10% of damages. This contrasts with "modified" comparative fault states that bar recovery once the plaintiff hits 50% or 51% fault.

Wrongful Death Damages

When a defective product causes death, family members have their own claim under California Code of Civil Procedure §377.60. The categories of recoverable damages differ from a personal injury claim:

• Loss of financial support the decedent would have provided
• Loss of household services (childcare, home maintenance, cooking)
• Reasonable funeral and burial expenses
• Loss of love, companionship, comfort, care, assistance, protection, affection, society, and moral support
• Loss of the enjoyment of sexual relations (for surviving spouses)
• Loss of guidance and training (for surviving children, especially minor children)

Wrongful death damages do not include the decedent's pre-death pain and suffering (those are part of a separate survival action under Code of Civil Procedure §377.20) or the decedent's lost future earnings (those would also be part of the survival action). The wrongful death claim is for the family's losses, not the decedent's.

Collateral Source Rule

California follows the collateral source rule. Payments to the plaintiff from independent sources (private health insurance, life insurance, employment benefits, gifts from family) generally do not reduce the plaintiff's recovery against the defendant. The defendant cannot point to the plaintiff's insurance and say "they were already compensated."

The rule has practical limits. The plaintiff's recovery must typically reimburse the insurance company or other source through subrogation or reimbursement claims. The plaintiff does not pocket the full amount; some flows back to the source. But the rule preserves the principle that the defendant pays the full damages it caused.

Howell v. Hamilton Meats created one important exception: medical bills that were billed but never paid (because the insurer negotiated them down) cannot be recovered in full. The plaintiff recovers the lesser of the amount billed or the amount actually paid or owed.

How Damages Are Actually Documented

The work of proving damages happens primarily in discovery and pretrial preparation:

1. Medical records and bills. Subpoenaed from every provider. Organized chronologically. Summarized for the jury.
2. Employment records. Pay stubs, tax returns, W-2s, employer letters confirming missed work and accommodations.
3. Treating physician testimony. Either by deposition or at trial. The doctors who actually treated the plaintiff usually carry more weight with juries than hired experts.
4. Independent medical examinations. The defense will usually require a "defense medical exam" by a doctor of their choosing. The exam is part of the discovery process.
5. Life-care plan. A detailed document prepared by a life-care planner showing future medical and care needs with itemized costs.
6. Economist report. Converts the future projections into present value using accepted discount rates.
7. Day-in-the-life evidence. Photos, video, and witness testimony showing how the injury has changed the plaintiff's daily life.

Frequently Asked Questions About California Product Liability Damages

What damages can you recover in a California product liability case?

California allows recovery of economic damages (medical bills, lost wages, future expenses), non-economic damages (pain and suffering, emotional distress, scarring), and in cases of malice or conscious disregard, punitive damages under Civil Code §3294. There is no general cap on damages in product liability cases.

Are there damage caps in California product liability cases?

No. Unlike medical malpractice cases (which have a non-economic damages cap under MICRA), California does not cap damages in product liability cases. Both economic and non-economic damages are recoverable in full, subject to the rules on comparative fault and several liability for non-economic damages.

What is the difference between economic and non-economic damages?

Economic damages are quantifiable financial losses with documented dollar amounts: medical bills, future medical costs, lost wages, loss of earning capacity. Non-economic damages compensate for losses without a specific dollar amount: pain and suffering, emotional distress, loss of enjoyment, scarring, and disfigurement.

When are punitive damages available?

Punitive damages are available under California Civil Code §3294 when the plaintiff proves by clear and convincing evidence that the defendant acted with malice, oppression, or fraud. In product liability, this usually means the manufacturer knew of a serious danger and consciously disregarded it.

What is Proposition 51?

Proposition 51, codified at Civil Code §1431.2, changed how non-economic damages are allocated among multiple defendants. Each defendant pays only its proportionate share of non-economic damages based on its percentage of fault. Economic damages remain subject to joint and several liability, meaning any defendant can be required to pay the full amount.

Can family members recover damages for wrongful death?

Yes. Under California Code of Civil Procedure §377.60, surviving spouses, domestic partners, children, and certain dependent relatives can recover for financial support lost, household services, funeral and burial expenses, and loss of love, companionship, and guidance.

Does comparative fault reduce damages?

Yes. California uses pure comparative fault under Li v. Yellow Cab (1975). If the jury finds the plaintiff was partly responsible for the injury (misuse of the product, ignored warnings, intoxication), the damages are reduced by the plaintiff's percentage of fault. Even a 90% at-fault plaintiff can recover 10% of damages.

How are future damages calculated?

Future damages are calculated based on expert testimony about life expectancy, expected medical needs, future earning capacity, and present value of future losses. Economists and life-care planners typically prepare written analyses showing the calculations, which can then be tested at deposition and trial.

By Jillian F. Hayes, Esq. · Last updated May 20, 2026

The Basic Rule: Two Years From Injury

California Code of Civil Procedure §335.1 sets the statute of limitations for personal injury claims at two years from the date of injury. That includes:

• Strict product liability claims
• Negligence claims against manufacturers, distributors, and retailers
• Breach of implied warranty claims where the harm is personal injury
• Most wrongful death claims arising from a defective product

The starting point is the date the injury occurred. A defective ladder collapses and the user falls on January 15. The two-year clock starts that day. The claim must be filed in court by January 15 two years later. Filing one day late is, in nearly every case, fatal.

The Discovery Rule: When the Clock Starts Late

The straightforward "date of injury" rule works for accidents where the harm is obvious immediately. It does not work as well for injuries that develop over time, where the connection between the product and the harm is hidden, or where the manufacturer concealed the defect.

California's discovery rule addresses this. Under the discovery rule, the statute of limitations does not start running until the plaintiff discovers, or with reasonable diligence should have discovered:

1. That they have been injured, and
2. That their injury was caused by someone's wrongful act

Both elements have to be met. The plaintiff knowing they are sick is not enough if they do not know (and could not reasonably know) that a product caused it. Knowing a product is defective is not enough if no injury has appeared yet.

Common product liability scenarios where the discovery rule applies:

• Slow-developing illness from chemical exposure
• Hidden cancers from defective medical devices
• Hormonal or developmental injuries from pharmaceutical use
• Latent structural failures in defective home products
• Cumulative trauma from defective workplace equipment

CCP §340.8: The Toxic Exposure Statute

California has a specific statute of limitations for toxic exposure cases: Code of Civil Procedure §340.8. The rule is similar to the discovery rule but is written into the statute itself.

Under §340.8, an action for injury or illness from exposure to a hazardous material or toxic substance must be brought within two years of the later of:

1. The plaintiff's first suffering of an appreciable harm, or
2. The date the plaintiff knew or should have known the harm was caused by exposure to the substance

This statute covers asbestos, industrial chemicals, contaminated drinking water, and other long-latency exposures. Mesothelioma cases routinely run on this statute because mesothelioma can appear 20 to 50 years after asbestos exposure. The injury does not exist for legal purposes until the disease manifests.

Minor Tolling Under CCP §352

Children injured by defective products receive special treatment under California Code of Civil Procedure §352. The statute of limitations is tolled (paused) while the child is under 18. The two-year clock starts on the child's 18th birthday. The deadline to file is generally the child's 20th birthday.

This rule applies regardless of whether a parent or guardian could have filed on the child's behalf earlier. The right is the child's, and the law protects it until the child reaches majority.

There is one practical caveat. Medical bills incurred by the parents for the child's injury may be subject to the regular two-year statute on a separate theory. Those bills usually have to be claimed within two years by the parents who paid them, even though the child's personal injury claim is still tolled. This is a fact-specific area, and most plaintiffs' attorneys preserve both claims by filing within two years of injury when possible.

Wrongful Death: A Separate Clock

A defective product can cause injuries that prove fatal weeks, months, or even years after the underlying event. California treats wrongful death as a separate cause of action from the decedent's personal injury claim.

The wrongful death statute of limitations is two years from the date of death, under CCP §335.1. The clock does not start at the injury. It starts when the person dies.

This matters for two reasons:

1. If the decedent's personal injury claim expired before death, the wrongful death claim may still be available (although a survival action under Code of Civil Procedure §377.20 may not be).
2. If the death occurs years after the original injury, family members have a fresh two-year window to bring a wrongful death claim, even when the decedent's own claim had already lapsed.

Family members entitled to bring wrongful death actions in California are listed in Code of Civil Procedure §377.60. They typically include the surviving spouse, domestic partner, children, and certain dependent parents or stepchildren.

Other Tolling Doctrines

Several other doctrines can extend the deadline. Each is narrow and fact-specific.

Fraudulent concealment. If the defendant actively concealed the defect or its causal link to the injury, the statute may be tolled until the plaintiff discovers (or reasonably could have discovered) the truth. This requires more than the defendant simply not advertising the defect. It requires affirmative concealment.

Mental incompetence. Under CCP §352, the statute is tolled for plaintiffs who lack the legal capacity to make decisions because of mental incapacity. The tolling continues until the incapacity ends.

Imprisonment. A separate tolling provision applies to plaintiffs who are imprisoned at the time the cause of action accrues, though that tolling is now limited to a maximum of two years.

Defendant out of state. Under Code of Civil Procedure §351, the statute of limitations is tolled while the defendant is absent from California. The doctrine has been narrowed by court decisions to avoid constitutional problems, but it still applies in some cases.

Equitable tolling. A court-created doctrine that allows tolling when the plaintiff has been diligently pursuing rights but in the wrong forum, or when fairness requires it.

What Counts as "Filing" the Lawsuit

The statute of limitations is satisfied by filing a complaint with the court. Mailing a demand letter to the defendant is not filing. Notifying the insurance company is not filing. Even hiring an attorney is not filing. The clock stops only when the complaint is physically filed with the court (now usually e-filed) and assigned a case number.

Most personal injury attorneys file before the deadline by a comfortable margin to avoid disputes about timeliness. If a case approaches its statute date with the attorney still investigating, the attorney typically files protectively and continues investigation.

Service of process is a separate question. Under CCP §583.210, the plaintiff has three years from filing to serve the complaint on the defendant. The statute of limitations question and the service question are distinct.

Tolling Agreements: A Negotiated Pause

Defendants and their insurance companies occasionally agree to "toll" the statute of limitations by written agreement. The agreement extends the deadline for a defined period while the parties continue settlement discussions or investigation.

Tolling agreements are a useful tool. They allow both sides to investigate without forcing the plaintiff to file a lawsuit prematurely. But they require explicit, signed agreement. Verbal assurances that "we are working on a settlement, don't worry about the deadline" are not enforceable. An adjuster who says "give us more time" is not waiving the statute of limitations.

If a tolling agreement is offered, it should be reviewed carefully by counsel before signing. The terms (length of tolling, scope of claims covered, whether the agreement waives the defense or only suspends it) all matter.

Common Mistakes That End Cases Permanently

The most common reasons valid product liability cases expire on the statute of limitations:

• Assuming the insurance company is "working on it" and will continue negotiations indefinitely
• Waiting to see if symptoms get worse before deciding to pursue a claim
• Confusing the discovery rule with simple delay (the rule has strict requirements; it is not an extension by request)
• Believing children's cases have unlimited time when in fact tolling has its limits
• Missing the wrongful death two-year clock because the underlying injury was years earlier
• Filing in the wrong court and not realizing the original filing did not toll the statute

How a Lawyer Calculates Your Specific Deadline

When a product liability attorney evaluates a new case, the deadline analysis usually follows this sequence:

1. What is the underlying injury date?
2. What type of claim applies (personal injury, wrongful death, toxic exposure)?
3. Are any tolling doctrines potentially applicable (minor, discovery rule, fraudulent concealment)?
4. Are there multiple potential defendants with potentially different timing rules?
5. What is the practical filing target (typically months before the absolute deadline to avoid risk)?

For a clean case (an adult plaintiff with a known injury date, a clear product defect, identifiable defendants), the analysis is fast. For a complex case (a child plaintiff with latent injuries from a possible exposure decades ago), the deadline calculation can require its own investigation.

Frequently Asked Questions About California Product Liability Deadlines

What is the statute of limitations for product liability in California?

Two years from the date of injury under California Code of Civil Procedure §335.1. This applies to personal injury claims based on strict product liability, negligence, and breach of implied warranty when the underlying harm is personal injury.

When does the two-year clock start?

Generally on the date of the injury. For latent injuries that develop over time (toxic exposure, slow-developing illness, hidden damage), the discovery rule may delay the start of the clock until the injured person knew or reasonably should have known of the injury and its cause.

Is there a different deadline for wrongful death?

Yes. Wrongful death claims arising from a defective product must be filed within two years of the date of death under CCP §335.1, even if the injury occurred earlier. This is a separate two-year clock that begins at death.

What is the discovery rule?

The discovery rule delays the start of the statute of limitations until the plaintiff discovers, or through reasonable diligence should have discovered, both the injury and that it was caused by someone's wrongful act. The rule applies most often in latent injury cases like toxic exposure and medical device claims.

How does the statute of limitations work for child victims?

Under California Code of Civil Procedure §352, the statute of limitations is generally tolled while a child is under 18. The two-year clock starts on the child's 18th birthday. For most child product liability claims, the deadline is the child's 20th birthday.

What about asbestos and other toxic exposure cases?

Toxic exposure claims have their own statute under California Code of Civil Procedure §340.8. The two-year clock starts when the plaintiff discovers, or reasonably should have discovered, both the physical injury and that exposure to a toxic substance was a cause.

Can the deadline be extended in any other circumstances?

Yes. Tolling may apply when the plaintiff is mentally incompetent, when the defendant fraudulently concealed the claim, when the plaintiff is imprisoned, or under various other equitable doctrines. These exceptions are narrow and fact-specific.

What happens if I miss the deadline?

If you file after the statute of limitations has run, the defendant will move to dismiss the case. The court will generally grant the motion, and the case will be barred regardless of how strong the underlying facts are. Missed deadlines are one of the most common and most permanent ways product liability claims fail.

By Jillian F. Hayes, Esq. · Last updated May 20, 2026

The Old Rule: Amazon Hid Behind "We're Just a Platform"

For years, Amazon's defense to product liability claims was straightforward. The company argued it was merely a venue, like a flea market or shopping mall. The actual seller was the third-party merchant who listed the product. Amazon claimed it didn't make the product, didn't take title to it, didn't pick it, didn't ship it. The argument worked. Federal courts in several states accepted some version of it. Plaintiffs found themselves trying to collect from sellers based in China or other jurisdictions, often with no realistic chance of recovery.

That worked until California changed the answer.

Bolger v. Amazon: The Decision That Changed Everything

In August 2020, the California Court of Appeal decided Bolger v. Amazon.com, LLC. The plaintiff, Angela Bolger, purchased a replacement laptop battery on Amazon from a third-party seller called Lenoge Technology. The battery exploded weeks later, leaving her with severe burns. Lenoge was a Chinese company. Recovering from Lenoge was a practical impossibility. Bolger sued Amazon directly.

Amazon raised its usual defenses: it wasn't the seller, it didn't manufacture the product, the third-party seller was the responsible party. The trial court agreed and granted summary judgment for Amazon.

The Court of Appeal reversed. The panel held that Amazon could be held strictly liable for the defective battery. The court focused on what Amazon actually did in the transaction:

• Amazon took possession of Lenoge's inventory in its warehouse
• Amazon set the rules for how products were listed and described
• Amazon processed the payment
• Amazon controlled communication with the buyer
• Amazon picked, packed, and shipped the product
• Amazon was the only entity Bolger ever interacted with as a buyer

That level of involvement, the court held, placed Amazon within the chain of distribution. Under California's strict product liability doctrine (which goes back to Greenman v. Yuba Power Products in 1963), every entity in the chain of distribution can be held strictly liable for a defective product that causes injury.

Loomis v. Amazon: The Confirmation

Some defendants tried to limit Bolger to its specific facts. They argued the case was about replacement batteries specifically, or about Amazon's particular relationship with Lenoge, or about the specific warehousing arrangement.

In April 2021, the California Court of Appeal addressed those arguments in Loomis v. Amazon.com LLC. The plaintiff was burned when a hoverboard she purchased through Amazon caught fire and ignited her home. The seller was again a third-party listing.

The court applied Bolger directly and held Amazon could be strictly liable. The decision made clear that Bolger was not a one-off. The same chain-of-distribution analysis would apply to any product where Amazon played the same functional role.

FBA vs. Non-FBA: A Real Distinction

"Fulfilled by Amazon" (FBA) is a service where third-party sellers ship their inventory to Amazon's warehouses. Amazon then handles storage, picking, packing, shipping, returns, and customer service. From the buyer's perspective, an FBA order looks identical to a direct Amazon order.

Both Bolger and Loomis involved FBA shipments. That fact mattered to the courts' reasoning. The deeper Amazon's operational involvement, the easier it is to place Amazon in the chain of distribution.

Cases involving third-party sellers who use their own fulfillment (sometimes called "merchant fulfilled") are more contested. Amazon's role is more limited: it provides the listing, processes payment, and handles dispute resolution, but it does not touch the product. Some federal courts have declined to extend strict liability to those transactions. California state courts have continued to focus on the totality of Amazon's role, but the analysis is fact-specific.

For practical purposes, FBA cases are the strongest. Most injuries from defective consumer products purchased on Amazon involve FBA inventory.

What You Have to Prove

A California product liability claim against Amazon requires the same elements as any other product liability case:

1. The product was defective. Design defect, manufacturing defect, or failure to warn. The plaintiff must point to a specific defect, usually with the help of an expert.
2. The defect existed when Amazon distributed the product. The plaintiff did not modify or damage it after delivery.
3. The defect caused the injury. Medical and engineering evidence usually connects the defect to the harm.
4. The plaintiff was injured. Documented damages, including medical bills, lost wages, and other losses.

Whether Amazon is in the chain of distribution is the additional element specific to Amazon cases. After Bolger and Loomis, that element is now answered as a matter of law for many transactions, particularly FBA orders.

Common Amazon Product Injuries

The product categories that produce the most injury claims tend to share some characteristics: cheap, imported, sold by sellers without strong U.S. legal presence, often with thin or inaccurate documentation. Categories where claims commonly arise include:

• Replacement batteries (laptops, e-cigarettes, power tools)
• Hoverboards and other lithium-battery-powered devices
• Phone chargers and cables that overheat or cause fires
• Children's toys with small parts, lead paint, or magnets
• Cosmetics and skincare products with undisclosed ingredients
• Counterfeit or off-brand car parts and accessories
• Kitchen appliances that overheat or fail to function safely
• Bicycle helmets and other "safety" gear that does not meet standards
• Knock-off home appliances with electrical failures

If the product carries a recognized U.S. brand and is sold by Amazon directly, the brand owner is usually the primary defendant. The Amazon claim is the backup. When the third-party seller is the only "manufacturer" and is overseas, the Amazon claim often becomes the only realistic path to recovery.

Why Amazon's Defenses Usually Lose

After Bolger and Loomis, Amazon's lawyers still raise the same arguments, but with limited success in California state courts. The recurring defenses:

"We're not the seller." Rejected when Amazon was deeply involved in fulfillment. Courts look at function, not labels.

"The third-party seller has the indemnity." Amazon's contracts with third-party sellers require them to indemnify Amazon. This is a contract dispute between Amazon and the seller. It does not relieve Amazon of liability to the injured consumer. Amazon pays the consumer, then seeks indemnity from the seller.

"The Communications Decency Act §230 protects us." Section 230 protects platforms from liability for third-party content (like product reviews and listings). It does not protect platforms from product liability claims for defective products themselves. Bolger explicitly rejected the §230 defense.

"The Conditions of Use require arbitration." Sometimes successful, sometimes not. The terms must be properly disclosed and agreed to. Family members of the buyer who were injured but did not personally agree to the terms can often proceed in court rather than arbitration.

Practical Steps After an Amazon-Related Injury

What to do, in order, in the first week:

1. Get medical treatment. Document everything from the first emergency visit forward.
2. Do not return the product. Amazon will try to recover it. The defective product is the most important evidence in the case. Photograph it from every angle, save the packaging, and store the item in a safe place.
3. Pull the Amazon order history. Screenshot or print the order confirmation, the product listing, the seller information, the fulfillment method (FBA or merchant fulfilled), and any reviews.
4. Save communications. Any messages with Amazon customer service, any replies from the seller, any return or refund offers.
5. Identify witnesses. Anyone who saw the injury occur or saw the product fail.
6. Talk to an attorney before talking to Amazon legal. Amazon will offer a refund. Refund offers are not settlements, but they can lead to "release" language that compromises the claim if you sign without legal review.

The Refund vs. the Lawsuit

Most people contact Amazon customer service first. Amazon often refunds the purchase price and may offer additional credits or a small gesture toward medical bills. That refund is not the case. A refund typically covers the cost of the product, not the medical bills, lost wages, pain and suffering, or future treatment.

For minor injuries with limited medical costs, a refund and small settlement may be the practical resolution. For serious injuries (burns from battery fires, fractures from defective ladders or step stools, chemical injuries from cosmetics, severe child injuries from toys), the actual damages routinely exceed the refund amount by orders of magnitude.

The lawsuit path is also where Amazon's incentives line up with the injured person's. Once a real case is filed, Amazon's legal department takes the matter seriously rather than treating it as a customer service issue.

Statute of Limitations: Two Years From Injury

California's general two-year statute of limitations applies. Under Code of Civil Procedure §335.1, the claim must be filed within two years of the injury, not within two years of the purchase. For latent injuries that show up later (chemical exposure, slow-developing burns or scarring), the discovery rule may extend that deadline, but it should not be relied on without legal advice.

Wrongful death cases (battery fires, hoverboard fires, defective car seat injuries) have their own two-year clock from the date of death under California Code of Civil Procedure §377.60. Minor victims have additional tolling protections under §352.

Frequently Asked Questions About Amazon Product Liability

Can you sue Amazon for a defective product in California?

Yes. Under Bolger v. Amazon (2020) and Loomis v. Amazon (2021), California courts held that Amazon can be strictly liable for defective products sold through its platform, even when the product was sold by a third-party seller. Amazon is treated as part of the chain of distribution.

What is Bolger v. Amazon?

Bolger v. Amazon.com, LLC (2020) 53 Cal.App.5th 431 is a California Court of Appeal decision holding that Amazon could be held strictly liable for a defective replacement laptop battery sold by a third-party seller on its Marketplace. The case established that Amazon's role in the transaction placed it within the chain of distribution.

What is Loomis v. Amazon?

Loomis v. Amazon.com LLC (2021) 63 Cal.App.5th 466 extended Bolger to a different fact pattern, holding Amazon strictly liable for a defective hoverboard that caught fire. The case confirmed Bolger was not limited to its specific facts.

Does it matter if the seller was Amazon or a third party?

Under current California law, Amazon can be strictly liable whether the product was sold by Amazon directly or by a third-party seller using Amazon's platform, as long as Amazon participated in the chain of distribution. FBA products almost always qualify.

What about products sold through Amazon but shipped by the seller?

Cases involving third-party sellers who use their own fulfillment are more contested. Bolger and Loomis involved FBA shipments. Some federal courts have declined to extend strict liability to non-FBA transactions, but California courts continue to focus on whether Amazon was integral to bringing the product to the consumer.

What is the deadline to sue for an Amazon product injury?

Two years from the date of injury, under California Code of Civil Procedure §335.1. Wrongful death claims have a separate two-year deadline from the date of death. Minor victims have additional tolling protections.

What damages are available against Amazon?

The same damages available in any California product liability case: medical bills, lost wages, future medical and economic losses, pain and suffering, scarring, and in some cases punitive damages under Civil Code §3294 if Amazon's conduct rose to malice or conscious disregard.

Does Amazon's user agreement prevent me from suing?

Amazon's Conditions of Use contain arbitration and limitation provisions, but California courts have generally permitted product liability claims to proceed despite those terms, particularly when the injured party did not personally purchase the item or did not knowingly agree to the terms.

By Jillian F. Hayes, Esq. · Last updated May 20, 2026

California Civil Code §3342: What the Statute Actually Says

California's dog bite statute was enacted in 1931. The core language has barely changed since. The statute makes the owner liable when three conditions are met:

1. A dog bites a person
2. The bite occurs in a public place or while the victim is lawfully on private property
3. The victim suffers damages

That is the entire test. There is no requirement to prove the owner knew the dog was dangerous. No requirement to prove the owner was careless. No defense based on the dog having a clean prior history. This is what lawyers mean when they call California a "strict liability" jurisdiction for dog bites.

The statute applies to the owner specifically. Renters, friends watching the dog, dog walkers, or anyone else handling the animal may be liable under different theories, but §3342 itself targets the owner.

How California Differs From "One Bite Rule" States

Many states still follow the common law "one bite rule." Under that approach, the owner has to know (or have reason to know) the dog has dangerous propensities before liability attaches. A dog with no bite history gets one "free" bite. The owner only becomes liable for the second one and beyond.

California explicitly rejected this rule when it adopted §3342. The owner is liable for the first bite. The dog's history does not matter for a §3342 claim. It may matter for a separate negligence claim or for criminal charges against the owner, but not for the statutory strict liability claim.

Who Counts as "Lawfully on Private Property"

The statute protects victims who are bitten in public places or while "lawfully on private property." That second category is where most arguments happen.

Clearly covered:

• Invited social guests
• U.S. Postal Service mail carriers (the statute specifically mentions them)
• Delivery drivers (UPS, FedEx, Amazon, food delivery)
• Utility workers reading meters or repairing lines
• Plumbers, contractors, and other service providers
• Real estate agents at a property they have permission to enter
• Children invited to a play date

Generally not covered:

• Trespassers
• Burglars or others on the property to commit a crime
• People who were warned to leave and did not

The statute also contains exceptions for military and police dogs performing official duties, and for cases where the victim was provoking the dog. Provocation is a fact question. The defense raises it often, but it usually fails when the bite involved a child or when the victim was simply walking past or trying to leave.

Non-Bite Injuries: When §3342 Does Not Apply

Civil Code §3342 covers bites specifically. The plain text uses the word "bitten." Courts have stuck to that meaning. If a dog injured you in another way (knocked you off your bike, scratched you with claws, chased you into traffic, caused you to fall while trying to escape), you have a claim, but it is not a §3342 claim.

These non-bite injury claims usually proceed under common law negligence. You have to show the owner failed to use reasonable care in controlling the animal, and that failure caused your injury. That is a more demanding burden than strict liability, but it is far from impossible. Off-leash dogs in leash-required areas, dogs known to chase joggers, dogs left in unfenced yards: each of these can support a negligence claim.

San Diego County Reporting Requirements

San Diego County requires dog bites to be reported to the Department of Animal Services. The reason is rabies control. The animal needs to be observed for ten days after the bite to confirm it is not infected. If the dog cannot be located, the victim may have to undergo rabies post-exposure treatment as a precaution.

Reporting also creates an official record of the bite. That record matters later for the civil case. It documents the date, location, dog, and owner. It captures whether the owner was cooperative. If the dog has bitten before, the prior reports will be in the same database.

Bites should be reported regardless of severity. Even minor breaks in the skin can transmit rabies and other infections. The county does not euthanize dogs based on a first reported bite. The dog is typically quarantined in the owner's home if the dog is licensed and current on vaccinations.

Homeowner's Insurance: Where the Money Actually Comes From

Very few dog bite settlements are paid by the dog owner personally. The vast majority come from the owner's homeowner's insurance or renter's insurance. These policies almost always include personal liability coverage, and dog bites are one of the most common claims they pay.

Standard policy limits are usually between $100,000 and $500,000. Some policies have higher umbrella coverage. A few insurers exclude specific breeds (rottweilers, pit bulls, Dobermans), and a few exclude all dog bite claims after a prior incident, but most policies cover the first claim regardless of breed.

Several practical points follow from this:

• You are not "going after" your neighbor personally in most cases. The insurance company is the real defendant.
• The insurance company will assign a claims adjuster and, if litigation begins, defense counsel.
• Settlements are usually paid by check from the insurance carrier, not the dog owner.
• The dog owner's premium may go up, but the financial impact on them is usually much smaller than the impact on the victim's recovery.

This is why even friends and family members can pursue dog bite claims without the awkwardness that some victims expect. The actual financial flow runs through the insurance carrier.

Damages Available in a California Dog Bite Case

California dog bite victims can recover both economic and non-economic damages:

Economic damages (provable bills and losses)

• Emergency room and urgent care costs
• Surgical repair, including plastic surgery
• Future reconstructive procedures, often staged over years for children
• Physical therapy
• Mental health treatment for PTSD and trauma response
• Lost wages during recovery
• Loss of earning capacity if the injury affects future work

Non-economic damages

• Physical pain and suffering
• Emotional distress, including ongoing fear of dogs
• Scarring and disfigurement (a separate category in California jury instructions)
• Loss of enjoyment of life activities

Punitive damages are available in dog bite cases but are uncommon. They require proof under Civil Code §3294 that the owner acted with malice, oppression, or fraud. A history of allowing a known-vicious dog to attack people may rise to that level. A first bite by an otherwise normal pet usually does not.

Children: A Different Risk Profile

Children make up a disproportionate share of severe dog bite injuries. The reasons are mechanical: a child's face is at the level of an adult dog's mouth. Bites to the face cause scarring and emotional consequences that follow the child into adulthood.

California law treats child victims slightly differently in three ways:

1. Statute of limitations is tolled. Under California Code of Civil Procedure §352, the two-year deadline is paused until the child turns 18. The case can be filed any time before the child's 20th birthday.
2. Settlements require court approval. Any settlement involving a minor must be approved by the court through a "minor's compromise" petition under Probate Code §3500. The judge reviews the settlement, the attorney's fees, and how the funds will be held.
3. Future damages take a larger role. A scar on a 6-year-old is going to be there for 70+ years. Reconstructive surgery often must be repeated as the child grows. Future damages projections are routinely the largest component of a child's case.

The Owner's Defenses

The most common defenses the insurance company raises:

Trespass. If the victim was not lawfully on the property, §3342 does not apply. The dispute usually centers on whether the victim had implied permission to be there.

Provocation. If the victim was teasing, hitting, or otherwise provoking the dog, the statute does not apply. Insurance defense lawyers stretch this defense as far as possible. It rarely succeeds with child victims because of the legal principle that young children cannot legally "provoke" in the way an adult might.

Comparative fault. Even if §3342 applies, the defense may argue the victim contributed to their own injury (ignoring posted warnings, sticking a hand into a fenced yard). California uses pure comparative fault under Li v. Yellow Cab (1975), so the victim's recovery is reduced by their percentage of responsibility rather than barred entirely.

Assumption of risk. Veterinarians, kennel workers, groomers, and similar professionals may be barred from §3342 recovery under the "veterinarian's rule" because they have voluntarily assumed the risk of dog bites as part of their job. Outside that narrow category, the defense rarely works.

What to Do in the First 24 Hours

The first day after the bite shapes the case more than people realize. Five things make the biggest difference:

1. Get medical care. Even if the wound looks minor, dog mouths carry bacteria that cause serious infections. Document the visit.
2. Identify the dog and owner. Get the owner's full name, address, phone, and insurance information. If the owner refuses, get the address where the dog lives.
3. Photograph everything. Wounds, blood, torn clothing, the location of the bite, the dog if possible, the property where the bite occurred. Take more than you think you need.
4. Report to San Diego County Animal Services. This creates the official record and starts the rabies observation period.
5. Save all medical records. Every bill, every discharge paper, every prescription. Insurance adjusters challenge undocumented expenses routinely.

Frequently Asked Questions About California Dog Bite Law

Is California a strict liability state for dog bites?

Yes. Under California Civil Code §3342, a dog owner is liable for damages when their dog bites a person in a public place or while the person is lawfully on private property. The victim does not need to prove the owner was negligent or that the dog had bitten anyone before.

What is the deadline to file a dog bite lawsuit in California?

Two years from the date of the bite, under California Code of Civil Procedure §335.1. For child victims, the deadline is generally tolled until the child turns 18, so the two-year clock starts on the 18th birthday.

Does the "one bite rule" apply in California?

No. California rejected the common law one-bite rule when it adopted Civil Code §3342 in 1931. The owner can be liable for the first bite. The dog's history matters for other claims, like negligence or strict liability for keeping a dangerous animal, but not for a §3342 claim.

Who pays for a dog bite injury in California?

Most claims are paid by the dog owner's homeowner's insurance or renter's insurance, which typically includes personal liability coverage. The insurance company defends the owner and pays the settlement or judgment up to the policy limits.

What damages can a dog bite victim recover?

Medical bills, future medical and reconstructive surgery costs, lost wages, pain and suffering, emotional distress, and scarring or disfigurement. Children's cases often include long-term psychological damages and the cost of revision surgeries as the child grows.

What if the dog did not actually bite but knocked someone over?

Civil Code §3342 specifically covers bites. For non-bite injuries (knocked down, scratched, chased into traffic), the claim usually proceeds under common law negligence, which requires showing the owner failed to use reasonable care to control the animal.

Can I sue if the dog bit me on the owner's property?

Yes, as long as you were lawfully on the property. Invited guests, postal workers, delivery drivers, utility workers, and other people with a legal right to be there are all covered. Trespassers generally are not.

What should I do immediately after a dog bite in San Diego?

Get medical attention, identify the owner and get their contact and insurance information, photograph the wounds and the scene, report the bite to San Diego County's Department of Animal Services so the dog's rabies status can be confirmed, and keep all medical records and bills.

By Jillian F. Hayes, Esq. · Last updated May 20, 2026

Why the Categories Matter

The three defect categories are not just academic labels. Each has its own legal test, its own evidentiary requirements, and its own typical defenses. The classification affects how a case is investigated, who the experts are, what documents matter in discovery, and how the case is presented to a jury.

A design defect case requires expert engineering testimony about safer alternative designs. A manufacturing defect case requires comparison of the injuring product against the manufacturer's specifications and other units. A failure-to-warn case requires analysis of what the manufacturer knew, when it knew, and what an adequate warning would have looked like.

Type 1: Design Defects

A product is defectively designed if its inherent design makes it unreasonably dangerous, even when manufactured perfectly. Every unit produced from that design carries the same risk. This is the broadest and often the most consequential defect type because it can affect thousands or millions of products.

The Barker Tests

The California Supreme Court's 1978 decision in Barker v. Lull Engineering, 20 Cal.3d 413, set out two alternative tests for design defect. The Soule v. General Motors decision in 1994 clarified when each applies.

The Consumer Expectations Test. A product is defectively designed if it failed to perform as safely as an ordinary consumer would expect when used in a reasonably foreseeable manner. The test asks: did the product behave the way a normal user would assume it would behave? This test works for products where consumer expectations are clear.

Example: An ordinary consumer expects a kitchen knife to cut without the blade snapping off. An ordinary consumer expects a child's stroller wheel to stay attached during normal use. When that doesn't happen, the consumer expectations test does the work.

The Risk-Benefit Test. When the plaintiff shows the design caused the injury, the burden shifts to the manufacturer to prove the design's benefits outweigh its risks. The jury weighs factors including:

• The gravity of the danger posed by the design
• The likelihood the danger would cause injury
• The mechanical feasibility of a safer alternative design
• The financial cost of the safer design
• The adverse consequences to the product and consumer of the safer design

The risk-benefit test is used when consumer expectations aren't reliable for the product (a complex industrial machine, a medical device, a chemical product). The burden-shifting structure makes it a powerful tool for plaintiffs.

Examples of Design Defect Claims

• Vehicle fuel tanks placed in positions that increase fire risk in collisions
• Power tools without standard safety guards
• Medications with side effect profiles that exceed benefit profiles for the indicated use
• Children's furniture with stability profiles that allow tipping
• Lithium-ion battery designs prone to thermal runaway under normal charging conditions

Type 2: Manufacturing Defects

A manufacturing defect exists when the product's design is safe but a specific unit was made wrong. The defect is in the individual product, not in the entire product line. Strict liability applies, but the plaintiff has to prove that the injuring unit deviated from the manufacturer's intended specifications.

How Manufacturing Defects Are Proven

The classic proof method is to compare the injuring product against:

• The manufacturer's own design specifications and drawings
• Other units from the same production run
• Industry standards for the product category

An expert witness, typically a manufacturing engineer or product safety specialist, examines the product and identifies the deviation. Photographs, microscopic analysis, and destructive testing are common. Maintaining the chain of custody for the injuring product is critical.

Examples of Manufacturing Defect Claims

• A car with a missing or defective weld in the frame
• A medical implant with material contamination from the manufacturing process
• A food product with foreign objects (glass, metal fragments) introduced during packaging
• A medication batch with the wrong active ingredient dose
• A bicycle component cast with an internal void that fails under normal stress

Type 3: Warning Defects (Failure to Warn)

A product has a warning defect when it carries a risk that could be reduced or eliminated by an adequate warning, and the manufacturer failed to provide one. Some products are unavoidably dangerous (prescription drugs, power tools, household chemicals) and the law accepts that. What the law requires is that consumers be told about the danger so they can make informed decisions.

What Makes a Warning Adequate

An adequate warning under California law has to:

• Identify the specific hazard, not generic dangers
• Communicate the magnitude of the risk
• Be conveyed in a manner reasonably likely to reach the foreseeable user
• Be physically positioned where the user will see it before encountering the hazard
• Be in language the user can understand

A label that says "use with caution" doesn't warn about a specific risk. A warning buried on page 47 of a user manual isn't reasonably likely to reach the user. A warning in English on a product marketed to Spanish-speaking consumers may not be adequate.

The Learned Intermediary Doctrine

For prescription drugs and some medical devices, California applies a modified rule called the learned intermediary doctrine. The manufacturer's duty to warn runs to the prescribing physician rather than directly to the patient. The theory is that doctors are positioned to understand the medical risks and counsel patients accordingly.

The doctrine has limits. If the manufacturer fails to warn the physician adequately, the manufacturer can still be liable. The California Supreme Court applied this framework in T.H. v. Novartis Pharmaceuticals Corp., 4 Cal.5th 145 (2017), in the context of generic drug manufacturers and brand-name innovators.

Examples of Failure-to-Warn Claims

• Prescription drugs without disclosure of known serious side effects
• Power tools sold without adequate safety operating instructions
• Household chemicals without warnings about respiratory hazards in unventilated spaces
• Children's toys without age-appropriate hazard warnings
• Electronics without disclosure of known overheating or fire risks
• Asbestos products sold without warnings about cancer risk (litigated extensively in Anderson v. Owens-Corning Fiberglas Corp., 53 Cal.3d 987 (1991))

Side-by-Side Comparison of the Three Defect Types

When a Single Case Involves Multiple Defect Types

Most product liability complaints plead all three defect categories. The pleading is essentially: "This product was defectively designed. If the design was fine, this particular unit was defectively manufactured. And in any event, the warnings were inadequate." Each theory survives or falls on its own.

Example: A consumer injured by a lithium battery fire might claim:

• Design defect (the cell chemistry and venting design create unreasonable thermal runaway risk)
• Manufacturing defect (this particular battery had a manufacturing flaw that increased the risk)
• Failure to warn (the manufacturer knew of similar incidents and did not warn consumers about charging practices or storage conditions)

Pleading all three preserves all paths to recovery as discovery develops.

Frequently Asked Questions

What are the three types of product defects in California?

Design defects, manufacturing defects, and warning defects.

What is a design defect under California law?

A design defect exists when the product's design is unreasonably dangerous, even when manufactured correctly. California uses the consumer expectations test or the risk-benefit test from Barker v. Lull.

What is a manufacturing defect?

A manufacturing defect exists when an individual unit deviated from the intended design during production and the deviation caused the injury.

What is a failure-to-warn defect?

A failure-to-warn defect exists when the product carries a risk that an adequate warning could reduce, and the manufacturer didn't provide such a warning.

What is the consumer expectations test?

It asks whether the product performed as safely as an ordinary consumer would expect when used in a reasonably foreseeable way.

What is the risk-benefit test?

Once the plaintiff proves the design caused the injury, the manufacturer must prove the design's benefits outweigh its risks.

Can a product have more than one type of defect?

Yes. Most complaints plead all three defect types in the alternative.

Who decides if a product is defective?

A jury at trial, or the parties through negotiation based on their assessment of how a jury would likely rule.

By Jillian F. Hayes, Esq. · Last updated May 20, 2026

Why Honest Case Value Estimates Are Hard Early On

Anyone who promises you a specific number in the first phone call is either guessing or selling you something. A defensible case value estimate requires three things: completed medical treatment (or a clear medical projection), a developed liability theory backed by evidence or expert opinion, and knowledge of the defendant's insurance and assets. Most cases reach this point 6 to 18 months in.

Early estimates exist on a range. "This case has six-figure potential if liability holds up." "This is more likely in the mid-five-figures." Those are honest because they account for what's known and unknown. A flat "this case is worth $500,000" without that backing is not a real estimate.

The framework below is the math attorneys actually use. Knowing it helps you understand your own case and recognize when a settlement offer is fair, low, or somewhere in between.

Step 1: Total Your Economic Damages

Economic damages are out-of-pocket losses you can document with receipts, bills, and records. They include:

Medical Expenses

• Emergency room and urgent care bills
• Hospital stays
• Surgery and surgical follow-up
• Physical therapy, occupational therapy, and rehabilitation
• Prescription medications
• Medical equipment (braces, crutches, wheelchairs, home modifications)
• Mental health treatment if the injury caused psychological harm
• Projected future medical costs (often supported by a life care planner's report in serious cases)

Lost Income

• Wages lost during recovery
• Lost benefits (health insurance contributions, retirement matching)
• Lost business income for self-employed plaintiffs
• Lost future earning capacity if the injury reduced your ability to work (vocational expert testimony often supports this)

Other Out-of-Pocket Costs

• Property damage caused by the defective product
• Replacement or repair costs
• Transportation to and from medical appointments
• Childcare or household help required because of the injury

Add it all up. That total is your economic damages baseline.

Step 2: Estimate Non-Economic Damages

Non-economic damages cover losses that don't come with receipts: pain, suffering, mental anguish, loss of enjoyment of life, disfigurement. California has no general cap on non-economic damages in product liability cases. Two methods are standard for estimation.

The Multiplier Method

The multiplier method takes your economic damages (or medical expenses alone) and multiplies by a number reflecting injury severity. The math looks like this:

A plaintiff with $40,000 in medical bills and a moderate injury might value pain and suffering at $80,000 to $120,000 (2x to 3x). A plaintiff with $200,000 in medical bills and catastrophic injury could see pain and suffering valued at $800,000 to $1,000,000 or more.

The Per-Diem Method

The per-diem method assigns a daily dollar value to recovery time. The daily value is often set at the plaintiff's normal daily earnings or another reasonable benchmark.

Example: A plaintiff earning $300/day who needs 180 days of recovery would calculate pain and suffering at $300 x 180 = $54,000. This method works well for finite injuries with clear recovery periods. It's harder to apply to permanent injuries.

Step 3: Add Punitive Damages Where Justified

California Civil Code Section 3294 allows punitive damages when the defendant acted with malice, oppression, or fraud. The standard is clear and convincing evidence (a higher burden than the preponderance standard for compensatory damages). Punitive damages are not common but can be substantial when warranted.

Examples of conduct that may support punitive damages:

• Internal documents showing the manufacturer knew about the defect and concealed it
• Falsified safety testing records
• Decisions to continue selling a recalled product
• Cost-benefit analyses showing the company calculated that paying claims would be cheaper than fixing the defect

Constitutional limits keep punitive damages in proportion to compensatory damages. The U.S. Supreme Court in State Farm v. Campbell (2003) indicated that single-digit ratios (typically less than 10x compensatory damages) are usually constitutional. Anything beyond that requires extreme circumstances.

Step 4: Adjust for Liability Strength

The numbers above assume the plaintiff wins on liability. Real cases include uncertainty. If liability is contested, the case value is the expected damages multiplied by the probability of winning. A $1,000,000 case with 70 percent probability of winning has an expected value of $700,000 for settlement purposes.

Liability strength depends on:

• Quality of the defect evidence (expert reports, the product itself, exemplar testing)
• Documentation of the manufacturer's notice or knowledge
• Existence of prior similar incidents (other lawsuits, complaints, recalls)
• Compliance or non-compliance with industry standards and regulations
• The credibility of the plaintiff and witnesses

Step 5: Account for Comparative Fault

California uses pure comparative fault. A plaintiff who was partially at fault for their injury still recovers, but the recovery is reduced by the percentage of fault assigned. This applies to both strict liability and negligence theories.

The reduction can be significant. If a jury finds the plaintiff 40 percent at fault on a $500,000 damages calculation, the recovery is $300,000. Defense attorneys argue plaintiff fault aggressively in product liability cases (claims of misuse, modification, ignoring warnings).

Step 6: Subtract Liens and Costs

The gross case value is not what you take home. Liens and costs come out before the net recovery is calculated. Common deductions include:

• Health insurance subrogation. Your health insurer may have a right to be reimbursed for medical bills it paid. ERISA self-funded plans have strong subrogation rights.
• Medicare and Medi-Cal liens. Required by federal and state law. These have to be addressed before settlement, or the settling parties face penalties.
• Workers' compensation lien. If your injury was work-related and workers' comp paid benefits, the carrier has a lien on third-party recovery.
• Hospital liens. Hospitals can place statutory liens for unpaid bills under California Civil Code Section 3045.1.
• Attorney's fees. Typically 33 percent to 40 percent of recovery on a contingency contract.
• Case costs. Expert witness fees, court fees, deposition costs, exhibits. These can run from a few thousand to several hundred thousand in complex cases.

Negotiating liens down is a significant part of maximizing net recovery. Most experienced attorneys reduce Medi-Cal, Medicare, and health insurance liens substantially during settlement negotiations.

Step 7: Sanity Check Against Insurance Limits

A case is only worth what the defendant can pay. Most product liability defendants have significant insurance (manufacturers carry general liability and product liability policies with limits often in the millions or tens of millions). Some don't. Component suppliers, smaller distributors, and overseas manufacturers may have inadequate coverage or be hard to collect against.

The case value calculation has to account for this. A perfectly valued $5,000,000 case against a $1,000,000 policy and a judgment-proof defendant may have a practical settlement value closer to $1,000,000.

Frequently Asked Questions

How is product liability case value calculated in California?

Combine economic damages, non-economic damages (estimated by multiplier or per-diem method), and punitive damages where applicable. Adjust for liability strength, comparative fault, liens, and the defendant's insurance.

What is the multiplier method for pain and suffering?

It multiplies economic damages by a number between 1.5 and 5+ depending on injury severity. A baseline tool, not a guarantee.

Are there caps on damages in California product liability cases?

No general caps. Medical malpractice cases have caps under MICRA, but product liability cases do not. Punitive damages are subject to constitutional limits.

How long does it take to know what my case is worth?

Preliminary estimates within weeks. Defensible valuation usually requires 6 to 18 months of treatment and discovery.

Does comparative fault reduce my case value?

Yes. California uses pure comparative fault. Your recovery is reduced by your percentage of fault.

What is the per-diem method?

It assigns a daily dollar value to recovery time. Works well for finite injuries, less well for permanent ones.

What liens come out of a product liability settlement?

Health insurance subrogation, Medicare, Medi-Cal, workers' compensation, hospital liens, attorney's fees, and case costs.

Does insurance policy limit affect case value?

Yes. A case is only worth what the defendant can pay. Most large manufacturers have substantial coverage, but smaller defendants may have policy limits that cap recovery.

By Jillian F. Hayes, Esq. · Last updated May 20, 2026

Why AI Liability Is a New Question With Mostly Old Answers

AI systems feel new. The legal framework that applies to them is mostly not. California has been adjudicating product liability cases for over 60 years. The doctrine is robust enough to absorb new technologies as they appear. Power tools in the 1960s, pharmaceuticals in the 1980s, electronics in the 1990s, and software-driven medical devices in the 2010s all got slotted into the same framework: was the product defective, did the defect cause harm, and who in the chain of distribution should pay.

The questions AI raises are real, but they're refinements rather than reinventions. Is software a product? When the AI's behavior emerges from training data rather than explicit code, who designed the defect? If two AI models in a pipeline produce harm together, how does fault get allocated? These are edges. The core framework still applies.

Is AI Software Even a "Product" in California?

This is the threshold question. Strict product liability under Greenman applies to products. Services are governed by negligence and contract law. AI sits in between in ways that depend on how it's distributed.

For most consumer AI harm cases, the system in question will be mass-distributed. That puts it squarely in product liability territory for most California courts.

Who Sits in the Chain of Distribution for an AI Product?

California strict liability reaches every commercial entity that participates in placing the product on the market. For an AI system, that chain often includes more parties than people realize:

• The foundation model developer. The company that trained the base model (OpenAI, Anthropic, Google, Meta, and others).
• The fine-tuner or wrapper developer. A company that takes a base model and adds task-specific training, prompts, or guardrails before deployment.
• The deployer or integrator. The business that builds an application around the AI and sells access to end users.
• The hardware manufacturer. For embedded AI (vehicles, robots, devices), the maker of the physical product.
• The component supplier. Sensor manufacturers, chip designers, dataset providers if their work was integrated into the AI in a defect-creating way.
• The seller or marketplace. The platform or retailer through which the AI product reached the consumer.

Each of these can be a defendant under strict liability. California's chain-of-distribution rule doesn't require the plaintiff to figure out which one caused the defect before suing them. The plaintiff sues the chain, and the defendants sort out indemnity among themselves.

The Three Defect Categories Applied to AI

Design Defect

An AI system has a design defect when its architecture, training data, or operating logic makes it unreasonably dangerous, even when functioning as intended. Possible examples include:

• A facial recognition system trained on data that produces high false-match rates for certain demographics.
• An autonomous driving system designed to make emergency decisions that violate California Vehicle Code safety priorities.
• A medical AI that systematically under-diagnoses serious conditions in particular patient populations.

Under Barker v. Lull, California uses both the consumer expectations test and the risk-benefit test for design defect. The risk-benefit test (where the burden shifts to the manufacturer once causation is shown) is probably the more useful test for complex AI systems because consumer expectations about AI are still forming.

Manufacturing Defect

An AI manufacturing defect is rarer but conceivable. A particular deployment of the model behaves differently from the intended version. A corrupted model weights file pushed to a subset of users. A configuration error that disables safety filters in one geographic region. The defect exists in some instances and not others.

Failure to Warn

This is likely to be the most common AI liability theory. AI systems often have known limitations, edge cases, and failure modes. When the deployer doesn't adequately disclose these to users, and the user relies on the AI to their detriment, failure-to-warn claims become viable. Examples include:

• A legal AI marketed for case research without disclosure of hallucination rates.
• A medical AI marketed to clinicians without disclosure of training data limitations.
• An autonomous vehicle marketed as "self-driving" when meaningful human supervision is still required.

Special Considerations for Autonomous Vehicles

Autonomous vehicle (AV) liability gets its own analysis because AV companies operate at the intersection of strict liability, traditional automotive product law, and a developing regulatory framework. In California, AVs are regulated by the Department of Motor Vehicles and the California Public Utilities Commission. The CPUC oversees commercial AV services like robotaxis. When an AV causes injury, potential defendants include:

• The vehicle manufacturer (Tesla, Waymo, Cruise, others)
• The AI software developer (often the same entity, sometimes a separate licensor)
• The fleet operator if the vehicle is used commercially
• The sensor or LIDAR supplier if a component failure contributed
• The human safety driver if one was present and inattentive

The 2018 Uber autonomous vehicle fatality in Tempe, Arizona, and several Tesla Autopilot cases have started building the precedent base for these claims. California courts haven't issued definitive appellate guidance yet, but the underlying product liability framework applies in the meantime.

Section 230 and AI: A Likely Limit on Platform Protection

Section 230 of the Communications Decency Act protects internet platforms from being treated as publishers of user-generated content. It does not protect platforms from liability for content the platform itself creates. AI-generated outputs from a platform's own model don't fit cleanly into the "content provided by another information content provider" language of the statute.

Several pending lawsuits, including the Walters v. OpenAI defamation case, are testing this question. The early signals suggest courts will not extend Section 230 to AI-generated content created by the platform itself. For California product liability claims, this matters because it removes a defense AI defendants might otherwise raise.

Statute of Limitations for AI Liability Claims

The standard two-year statute of limitations under CCP Section 335.1 applies. The clock starts on the date of injury. For AI cases involving harms that aren't immediately apparent (a financial AI that makes bad recommendations over months, a medical AI that under-diagnosed a condition that progressed silently), the discovery rule may extend the deadline. The plaintiff has to act promptly once the injury and its cause are reasonably knowable.

Frequently Asked Questions

Can you sue an AI company in California for harm caused by its system?

Yes, in most cases. California's existing product liability framework applies to AI systems sold as products. Liability can reach the developer, deployer, integrator, and seller.

Is software a product under California law?

For mass-distributed consumer software embedded in or marketed as a product, generally yes. Custom bespoke software is more often treated as a service.

Who is liable when an autonomous vehicle causes an accident?

The vehicle manufacturer, the AI software developer, component suppliers, the fleet operator, and in some cases a supervising human driver. California strict liability reaches the whole chain.

What California laws apply to AI liability?

The general product liability framework (Civil Code Section 1714, Greenman, Barker, CCP Section 335.1) and AI-specific disclosure statutes like AB 2013 and SB 942 from 2024.

What does it mean for an AI system to be defective?

Defective by design (unsafe architecture or training), defective in manufacture (a specific deployment is broken), or defective by warning (known limitations not disclosed). All three categories apply.

Can I sue if a chatbot gave me bad advice that caused harm?

Possibly. The analysis depends on what the AI was marketed for, what warnings were given, and whether reliance was reasonable. This area of law is still developing.

Are AI companies protected by Section 230?

Probably not for content the AI itself generated. Section 230 protects platforms from user-generated content, not platform-generated outputs.

How long do I have to sue for AI-related harm in California?

Two years from the date of injury under CCP Section 335.1. Discovery rule exceptions may apply.

By Jillian F. Hayes, Esq. · Last updated May 20, 2026

The Short Answer

The difference is what the plaintiff has to prove. Strict liability says: prove the product was defective and the defect caused the injury. That's it. Negligence says: prove the defendant owed you a duty, breached that duty, and the breach caused the injury. Negligence adds two steps that strict liability skips.

In a typical San Diego product liability lawsuit, the plaintiff pleads both. That way the case survives if a court throws one theory out, and the jury gets to consider which framework fits the facts.

How Each Theory Works in Practice

Strict Liability

California adopted strict liability for defective products in Greenman v. Yuba Power Products, 59 Cal.2d 57 (1963). The rule is captured today in CACI jury instruction 1200. To win under strict liability, a plaintiff has to prove:

1. The defendant manufactured, distributed, or sold the product;
2. The product was defective when it left the defendant's control;
3. The plaintiff was injured;
4. The defect was a substantial factor in causing the injury.

That's the entire framework. There's no requirement to show what the manufacturer knew, when it knew it, or whether it acted reasonably. The product is on trial, not the people who made it.

Negligence

Negligence is the older doctrine and predates strict liability by centuries. To win on a negligence theory in a California product liability case, the plaintiff has to prove:

1. The defendant owed the plaintiff a duty of care (almost always yes for product manufacturers);
2. The defendant breached that duty;
3. The breach was the cause of the plaintiff's injury;
4. The plaintiff suffered damages.

The "breach" element is where most of the work happens. The plaintiff has to show what the defendant did wrong: a sloppy design process, an ignored test result, a quality control failure, a known risk the company chose to accept. Negligence requires getting into the company's head and conduct in a way strict liability doesn't.

Side-by-Side Comparison

When Strict Liability Is the Stronger Theory

For most consumer product injuries, strict liability is the cleaner path. The plaintiff doesn't have to prove what the company did or didn't do. The plaintiff just has to prove the product was defective and that the defect caused the harm. This is particularly useful when:

• The defect is obvious from inspecting the product (a missing weld, a fractured component, contamination).
• The manufacturer is overseas and discovery into its conduct will be slow, expensive, or impossible.
• The lawsuit names retailers and distributors who didn't make the product (they have no negligence exposure of their own but are strictly liable under California's chain-of-distribution rule).
• The case rests on expert testimony about the product itself rather than corporate misconduct.

When Negligence Adds Real Value

Negligence becomes more valuable when the company's conduct is part of the story. Consider these scenarios:

• Internal company documents reveal the manufacturer knew about the defect for years and did nothing.
• Whistleblower testimony or regulatory filings show a pattern of ignored safety warnings.
• The company conducted inadequate testing or pressured engineers to overlook problems.
• The case may support punitive damages under California Civil Code Section 3294, which requires malice, oppression, or fraud.

Negligence frames the company's behavior in front of a jury. Juries respond to stories about preventable injuries and corporate decisions to accept risk. Strict liability is technical. Negligence is human. Both can win at trial. The one that resonates with the jury depends on the facts.

Comparative Fault Applies to Both

California uses pure comparative fault for both strict liability and negligence claims. A plaintiff who is partially at fault for their own injury still recovers, but the recovery is reduced by the percentage of fault assigned by the jury.

Example: A jury awards $200,000 in damages. The jury finds the plaintiff 30 percent at fault for misusing the product. The plaintiff recovers $140,000 ($200,000 minus 30 percent).

This is true even if the plaintiff is more than 50 percent at fault. California's pure comparative fault rule (the rule announced in Li v. Yellow Cab Co., 13 Cal.3d 804) is more plaintiff-friendly than the modified comparative fault rules used in many other states.

Breach of Warranty as a Third Theory

California Commercial Code Sections 2313 (express warranty), 2314 (implied warranty of merchantability), and 2315 (implied warranty of fitness for a particular purpose) provide a third path. Warranty claims are based on broken promises rather than defects.

• Express warranty arises when a manufacturer makes a specific representation about the product. An advertised "shatterproof" glass that shatters. A "non-toxic" cleaner that causes chemical burns.
• Implied warranty of merchantability means the product is reasonably fit for ordinary use. Every commercial sale carries this warranty unless effectively disclaimed.
• Implied warranty of fitness for a particular purpose arises when the seller knows the buyer wants the product for a specific use and the buyer relies on the seller's expertise.

Warranty claims have their own statute of limitations (four years from delivery under Commercial Code Section 2725), which can sometimes survive when a personal injury claim's two-year deadline has run.

Practical Effect on Case Value

Choice of theory doesn't directly affect compensatory damages. The same medical bills, lost wages, and pain and suffering are recoverable under any of the three theories.

The choice can affect punitive damages and settlement posture. Negligence claims with strong evidence of corporate misconduct often push manufacturers toward higher settlements because the punitive exposure scares them. Strict liability claims with clean defect proof but no corporate-misconduct story settle on the strict liability theory.

A San Diego product liability attorney will usually plead all available theories early, conduct discovery to see which the evidence supports, and emphasize the strongest one closer to trial.

Frequently Asked Questions

What is the difference between strict liability and negligence in California?

Strict liability focuses on whether the product was defective. Negligence focuses on whether the defendant acted reasonably. Strict liability requires less proof and is the standard framework in California consumer product cases.

Can I sue under both strict liability and negligence?

Yes. Most California product liability complaints plead both, often with breach of warranty as a third theory.

Why is strict liability easier to prove than negligence?

Strict liability requires only proof of defect and causation. Negligence also requires proof of duty, breach, and that the breach caused the injury. That's two extra hurdles.

Does strict liability apply to all defendants?

In California, strict liability applies to all commercial entities in the chain of distribution: manufacturers, distributors, retailers, and importers. It does not apply to private sellers.

Is negligence ever a stronger claim than strict liability?

Yes. Negligence is often the better path for punitive damages and is useful when corporate misconduct is part of the case.

What damages can I recover under each theory?

Both allow recovery of economic damages, non-economic damages, and in qualifying cases, punitive damages.

Does comparative fault apply to strict liability claims?

Yes. California applies pure comparative fault to both. Recovery is reduced by the plaintiff's percentage of fault but is not barred.

What is breach of warranty and how does it fit in?

Breach of warranty is a third theory based on broken express or implied promises about the product. It's governed by California Commercial Code Sections 2313 through 2315.

By Jillian F. Hayes, Esq. · Last updated May 20, 2026

The Origin of California Product Liability Law

The story starts with a power tool and a Christmas gift. William Greenman received a Shopsmith combination power tool from his wife in 1955. Two years later, a piece of wood flew out of the lathe attachment and struck him in the forehead, causing serious injury. He sued the manufacturer.

When the case reached the California Supreme Court in 1963, Justice Roger Traynor wrote an opinion that changed American product liability law. The court held that a manufacturer is strictly liable in tort when it places a product on the market, knowing it is to be used without inspection for defects, and the product proves to have a defect that causes injury. That was Greenman v. Yuba Power Products, 59 Cal.2d 57. Within a few years, courts in dozens of other states adopted the same rule.

Three other California cases built on Greenman and shaped the modern framework:

• Cronin v. J.B.E. Olson Corp. (1972) removed the requirement that a plaintiff prove the product was "unreasonably dangerous." A defect is enough.
• Barker v. Lull Engineering (1978) set out the two tests for design defect: the consumer expectations test and the risk-benefit test.
• Soule v. General Motors Corp. (1994) clarified when each Barker test applies. The consumer expectations test is appropriate when ordinary consumers can form expectations about safety. The risk-benefit test is for complex products where consumer expectations alone don't tell the story.

These decisions are still cited in San Diego product liability litigation today. They explain why California is among the most plaintiff-favorable states for these claims.

Strict Liability vs. Negligence vs. Warranty

An injured person can usually pursue three legal theories at once. The complaint will plead all of them and let discovery sort out which sticks. Each has different elements.

The Three Types of Defects Recognized in California

A product is defective under California law if it falls into one of three categories. The classification matters because the legal standard for proving each type is different.

Design Defect

The product was designed dangerously, even though manufactured exactly as intended. Every unit coming off the line carries the same risk. California uses two tests, set out in Barker v. Lull Engineering:

• Consumer Expectations Test. Did the product perform as safely as an ordinary consumer would expect when used in a reasonably foreseeable way? If not, it's defective.
• Risk-Benefit Test. Once the plaintiff shows the design caused the injury, the burden shifts to the manufacturer to prove the benefits of the design outweigh the risks. This is the test for technically complex products.

Manufacturing Defect

The product's design was safe, but something went wrong during production on the specific unit that caused injury. A car with a defective airbag inflator. A bottle of soda with a glass shard inside. The defect is in the individual product, not the design as a whole.

Warning Defect (Failure to Warn)

The product carries an inherent risk that could be reduced or eliminated by a warning, and the manufacturer didn't provide an adequate one. The classic example is a prescription drug with undisclosed side effects. Power tools, household chemicals, and medical devices are common subjects of failure-to-warn claims.

Who Can Be Held Liable in a California Product Liability Case?

California's strict liability doctrine reaches everyone in the commercial chain of distribution. That's broader than most states.

• Manufacturer. The party that designed and built the product. Always a defendant when identifiable.
• Component manufacturer. The maker of a defective part inside a larger product.
• Distributor or wholesaler. Anyone in the chain between manufacturer and retailer.
• Retailer. The store or website that sold the product to the consumer.
• Importer. Treated as the manufacturer for products made overseas.
• E-commerce platforms. Under Bolger v. Amazon.com (2020) and Loomis v. Amazon.com (2021), online marketplaces like Amazon can be strictly liable for defective third-party products in many cases.

The rule exists because California courts decided long ago that the entity in the best position to identify and prevent defects (or to insure against them) should bear the loss when injuries happen. Spreading liability across the chain encourages safer products throughout it.

Damages Available in a California Product Liability Claim

California allows two main categories of compensatory damages, plus punitive damages in qualifying cases.

Economic Damages

• Past and future medical expenses (treatment, surgery, rehab, prescriptions)
• Lost wages and lost future earning capacity
• Property damage
• Out-of-pocket costs related to the injury

Non-Economic Damages

• Physical pain and suffering
• Mental and emotional distress
• Loss of enjoyment of life
• Disfigurement and scarring
• Loss of consortium (claim brought by spouse)

Punitive Damages

Under California Civil Code Section 3294, punitive damages are available when the defendant acted with malice, oppression, or fraud. These awards are intended to punish and deter. They typically require clear and convincing evidence (a higher standard than the preponderance standard for compensatory damages). Punitive awards have constitutional limits but can be substantial when warranted.

One technical note specific to California: Proposition 51, codified at Civil Code Section 1431.2, makes defendants severally liable (not jointly) for non-economic damages. Each defendant pays its percentage of fault for pain and suffering, not the whole thing. Economic damages remain joint and several.

Statute of Limitations and Discovery Rule

The general rule is two years from the date of injury under CCP Section 335.1. Wrongful death claims run two years from the date of death. There are exceptions:

• Discovery rule. When an injury (or its cause) was not reasonably discoverable at the time it happened, the clock starts when the plaintiff knew or should have known. This often applies in toxic exposure and pharmaceutical cases.
• Toxic exposure. CCP Section 340.8 provides a two-year limit from the date the plaintiff knew or should have known the injury was caused by toxic exposure.
• Minors. The statute of limitations is typically tolled until the minor turns 18, then runs for the standard two years.
• Latent defect cases. Some product defects (asbestos exposure, medical implants) don't manifest for years. California courts have recognized exceptions for genuinely hidden injuries.

Even with these exceptions, the safest course is to consult a product liability attorney quickly. Most exceptions are narrow and depend on specific factual showings.

Frequently Asked Questions

What is product liability law in California?

It's the area of law that holds manufacturers, distributors, and retailers responsible when a defective product injures someone. California uses strict liability, meaning an injured plaintiff only has to prove the product was defective and caused the injury, not that the defendant was negligent.

What are the three types of product defects in California?

Design defect (the design itself is dangerous), manufacturing defect (something went wrong on the assembly line), and warning defect (the product is dangerous and the warning is inadequate).

Do I have to prove negligence?

No. Strict liability doesn't require proof of negligence. Most California product liability cases are pleaded under strict liability, negligence, and breach of warranty at the same time, but strict liability is the simplest path.

How long do I have to file a product liability lawsuit?

Two years from the date of injury under CCP Section 335.1. Some exceptions apply for delayed discovery, toxic exposure, and minors.

Can I sue the seller if I don't know who made the product?

Yes. California's chain-of-distribution rule applies strict liability to retailers and platforms, not just manufacturers. Bolger v. Amazon in 2020 confirmed this includes some online marketplaces.

What damages can I recover?

Economic damages (medical bills, lost wages), non-economic damages (pain and suffering), and in qualifying cases, punitive damages under Civil Code Section 3294.

What's the difference between strict liability and negligence?

Strict liability focuses on the product. Negligence focuses on the defendant's conduct. Strict liability is easier to prove and is the standard framework in California consumer product cases.

Does product liability law apply to used products?

Sometimes. Commercial sellers of used products can face strict liability in some circumstances. Private casual sales generally cannot.