Strict liability removes one thing from a defective product case: the need to prove the company was careless. It does not remove the rest of the case. An injured person still has to establish that the product was defective, that the defect caused the harm, and that there was harm. The recovery can still be reduced by the injured person’s own share of fault, because California’s pattern instructions include comparative fault instructions written specifically for strict liability claims. And several affirmative defenses remain available to the defendant. “Strict” describes what you do not have to prove about the manufacturer’s conduct, not an automatic outcome.
The summaries circulating online say strict liability means you “only need to prove the product was defective and caused your injury.” That is accurate as far as it goes and it invites a misreading, because it makes the doctrine sound closer to automatic than it is. This article sets out what strict liability actually changes and what it leaves in place. For the full framework, see our California defective product lawyer page. To talk through a specific product, call our San Mateo office at 650-250-0705.
Key Takeaways
- Strict liability shifts the focus from the company’s conduct to the product’s condition. That is the whole of what it changes.
- Defect, causation, and harm all still have to be established.
- California has comparative fault instructions written specifically for strict liability claims, which is the clearest evidence that the doctrine is not no-fault.
- Liability reaches the chain of distribution, which is why a claim can survive when the manufacturer is overseas, dissolved, or has no assets.
- “How long is a company liable” is really two questions, and the answer depends on which one you are asking.
What Strict Liability Changes
In an ordinary negligence claim, the question is whether the defendant behaved unreasonably. A manufacturer could argue that its processes were sound, its testing was thorough, and its quality control was industry standard, and if the jury agreed, the claim would fail even though a defective unit reached a consumer and injured them.
Strict liability removes that defense. The question becomes whether the product was defective, not whether the company was careful. A manufacturer with an exemplary quality system can still be liable for the one unit that left the line wrong.
California’s products liability jury instructions reflect this by running the theories in parallel. The strict liability series begins at CACI No. 1200, and a separate negligence series for products begins at CACI No. 1220. A claim can be brought under both, which is common, because what the evidence will support is not clear before discovery. The instructions are published free by the Judicial Council in the California Civil Jury Instructions.
What Strict Liability Does Not Change
This is the part the summaries skip, and it matters because it is the difference between a doctrine and a guarantee.
You still have to establish a defect
Strict liability does not presume a product was defective because someone was injured using it. The defect has to be established under one of three theories, each requiring different evidence: a manufacturing defect, where the unit differed from its intended design; a design defect, where the design itself is unsafe; or a failure to warn. Our article on building a strong defective product claim covers what each theory needs.
You still have to establish causation and harm
That the defect caused this injury, and that there was actual injury or loss. Causation is frequently the most contested issue in a product case, and strict liability does nothing to ease it.
On one design test, the burden shifts to the defendant, but only after you carry yours
California recognizes two tests for a design defect. The instruction for one of them, CACI No. 1204, is titled “Strict Liability—Design Defect—Risk-Benefit Test—Essential Factual Elements—Shifting Burden of Proof.” The shift is real and it is favorable, but it comes after the injured person establishes the basic elements, not instead of them.
Your own share of fault still reduces the recovery
This is the point that most clearly contradicts the “automatic liability” reading, and it is visible in the instruction titles themselves. California’s products series includes CACI No. 1207A, “Strict Liability—Comparative Fault of Plaintiff,” and CACI No. 1207B, “Strict Liability—Comparative Fault of Third Person.” Comparative fault instructions written specifically for strict liability claims would not exist if strict liability meant fault was irrelevant. California follows a pure comparative fault approach, so a share of responsibility generally reduces a recovery by that percentage rather than barring it.
Affirmative defenses remain available
The products series includes several, each with its own instruction:
- CACI No. 1245, product misuse or modification
- CACI No. 1244, the sophisticated user defense
- CACI No. 1249, reliance on a knowledgeable intermediary
- CACI No. 1248, which concerns inherently unsafe consumer products and carries a Civil Code reference in its own title
Note what these are: defenses, carried by the party raising them. Google’s AI Mode answer frames misuse as something that weakens a consumer’s claim, which is true in effect but obscures who has to establish it.
Who Is in the Chain, and Why Suing the Retailer Is Not a Technicality
Strict liability reaches the parties who put a product into the stream of commerce, not only the company whose name is on it. Depending on the facts that can include the manufacturer of the finished product, the maker of a component part subject to the component parts rule at CACI No. 1208, distributors and wholesalers, the retailer who sold it, and in some circumstances a party that leased or rented the equipment.
People often assume naming the retailer is unfair or a technicality, since the shop did not design or build anything. Two responses.
First, it is frequently the only route to a remedy. When a manufacturer is overseas, dissolved, or judgment-proof, a claim against a distributor or retailer inside California may be the difference between a viable claim and none. Imported consumer electronics are the clearest example.
Second, the loss does not generally stop at the retailer. Parties in a distribution chain typically have indemnity rights against those further up it, and California’s instructions include a series on indemnity between parties. So the practical effect of naming a retailer is usually to start the process of routing the loss toward whoever introduced the defect, not to leave it with the shop.
Who Strict Liability Generally Does Not Reach
“Anyone in the chain” is the shorthand, and it is too broad. Strict liability is a doctrine aimed at those who are in the business of distributing products, and it does not extend to every person who ever transferred an item.
Situations that commonly fall outside it, or that are analysed differently, include an occasional or private seller rather than a commercial one, someone providing a service rather than supplying a product, and various used-goods and rental arrangements. California’s instructions treat product rental under the negligence series, at CACI No. 1224, rather than within the strict liability series, which is an indication that these situations are not simply folded in.
Where a transaction sits on that line is a genuinely fact-specific question and it is one of the first things a lawyer works out, because it determines which theory is even available.
“How Long Is a Company Liable for a Product?”
This question, which Google surfaces alongside this search, is really two questions, and conflating them produces wrong answers.
How long do I have to bring a claim? This is the limitations period, and in California it is generally measured from the injury rather than from the date the product was sold. Most injury claims against a private party must be filed within two years under Code of Civil Procedure section 335.1. A product that failed twenty years after purchase does not fail that test simply because it was old.
Is there a cutoff measured from the sale itself? Some states impose one, and some claim categories have their own timing rules. Whether any such cutoff applies to a particular claim is not something to assume in either direction, and it is worth getting checked rather than concluding from a general article that a claim is either fine or hopeless.
What can be said without qualification is that the practical deadline usually arrives well before any legal one. A product returned, repaired, or discarded takes the manufacturing defect theory with it regardless of how much time remains.
Deadlines
| Situation | General rule | Source |
| Injury claims against a private party, including a manufacturer or retailer | Two years from the date of injury | Code Civ. Proc., § 335.1 |
| Claims based on a health care provider’s professional negligence | A different limitations framework applies, with its own rules | Code Civ. Proc., § 340.5 |
| Claims where a public entity may be responsible | A written claim generally must be presented within six months | Gov. Code, § 911.2 |
| Warranty-based claims | Governed by their own limitations rules, which differ from the injury deadline | Worth confirming for the specific theory |
Strict Liability Claims in San Mateo County
Our office at 15 North Ellsworth Avenue, Suite 105, San Mateo, CA 94401 works with injured people across the Peninsula. Civil cases here are handled by the Superior Court’s Civil Division at the Hall of Justice, 400 County Center, Redwood City, and a product case will normally be an unlimited civil matter.
Product claims here frequently surface inside another matter: a vehicle component or restraint system in a car or truck collision, or equipment involved in a fall on unsafe property. Raising the product angle early matters, because the chain of distribution question takes time to work out and the evidence window is short.
More about the office is on our San Mateo page, and related explanations are collected in our California personal injury guides.
How Vaksman Khalfin Can Help
Vaksman Khalfin, PC can assess which theory the available evidence actually supports, identify everyone in the chain of distribution and whether each is within reach of strict liability, preserve the product before it is lost, obtain the design, testing and complaint records through discovery, respond to the affirmative defenses a manufacturer is likely to raise, and litigate where a fair resolution is not offered.
The firm’s California personal injury practice is led by Alan D. Khalfin, admitted in California. Product matters are handled on a contingency-fee basis: there is no upfront attorney’s fee, and attorney’s fees are owed only if there is a recovery. Case costs, which in product cases frequently include expert and testing fees, are a separate category from attorney’s fees. How case costs are handled, including whether you may be responsible for them, is set out in the written fee agreement reviewed with you before anything is signed.
To talk about a defective product, call 650-250-0705 or schedule a free consultation. If you still have the item, do not alter it.
Reviewed by Alan D. Khalfin, Partner and Managing Attorney, Vaksman Khalfin, PC (admitted in California). Last reviewed: 09/22/2026
Frequently Asked Questions
It means the case focuses on the product's condition rather than the company's conduct. An injured person does not have to prove the manufacturer was careless. They do still have to establish that the product was defective, that the defect caused the harm, and that there was harm.
A manufacturing defect, where the specific unit differs from its intended design; a design defect, where the design itself is unsafe so every unit carries the same risk; and a failure to warn, where warnings or instructions were inadequate for a risk that was known or knowable. Design defect can be established two ways, and on one of them the burden of proof shifts to the defendant, which is recorded in the title of CACI No. 1204.
This phrase is used for two different things, which is why answers appear to conflict. The three legal theories are strict liability, negligence, and breach of warranty, and they answer on what basis a defendant is responsible. The three defect types are manufacturing, design, and failure to warn, and they answer what is wrong with the product. A single case can combine several of each.
Strict liability reaches parties who put the product into the stream of commerce: the manufacturer of the finished product, the maker of a component part subject to the component parts rule, distributors and wholesalers, the retailer who sold it, and in some circumstances a party that leased or rented it. It does not reach every person who ever transferred an item, and occasional private sellers, service providers, and some used-goods and rental arrangements are analysed differently.
Yes, under strict liability a retailer can be responsible for selling a defective product even though it did not design or build it. That matters practically when a manufacturer is overseas, dissolved, or has no assets, because a claim against a party inside California may be the only viable route. Parties in a distribution chain also typically have indemnity rights against those above them, so the loss generally does not stop at the retailer.
No. It removes the need to prove carelessness, not the rest of the case. Defect, causation and harm all still have to be established, your own share of fault can still reduce the recovery, and several affirmative defenses remain available. California's products series includes comparative fault instructions written specifically for strict liability claims, at CACI Nos. 1207A and 1207B.
The products series includes instructions for product misuse or modification, the sophisticated user defense, reliance on a knowledgeable intermediary, and a defense concerning inherently unsafe consumer products. These are affirmative defenses, which means they are raised and carried by the party asserting them rather than disproved in advance by the injured person.
That is two questions. The deadline to bring a claim is generally measured from the injury rather than from the sale, and most injury claims against a private party must be filed within two years under Code of Civil Procedure section 335.1. Whether any separate cutoff measured from the date of sale applies to a particular claim is a different question and should be checked rather than assumed in either direction.
No. The doctrine is widely recognized but its scope, its tests, and the defenses available differ by state. This article describes California, and a claim arising elsewhere needs to be assessed under that state's law.
