Product liability law holds manufacturers, distributors, and retailers legally responsible for injuries caused by defective or dangerous products they put into commerce. Courts apply three main theories: strict liability (the seller is liable regardless of fault when a product is unreasonably dangerous), negligence (failure to exercise reasonable care in design, manufacturing, or warnings), and breach of warranty (the product fails to meet express or implied promises of safety). Strict liability, adopted by most states following the Restatement Second of Torts Section 402A (1965), removes the burden of proving the seller knew about the defect — plaintiffs need only show the product was defective and the defect caused the harm.
How a product becomes legally "defective" turns on three sub-theories: design defect (the product is inherently unsafe as engineered), manufacturing defect (a specific unit deviates from the intended design), and failure to warn (the seller didn't adequately disclose known risks). Florida's 2026 lawsuit against OpenAI tests whether AI chatbot outputs qualify as a product under state tort law and whether responses that allegedly helped plan a mass shooting constitute an actionable design defect or failure to warn. No U.S. court had previously applied product liability doctrine to generative AI outputs.
The doctrine's limits remain contested. Service providers have historically received less exposure than product sellers. Federal preemption can block state product claims where Congress has set safety standards. And plaintiffs face the challenge of proving causation when a product's harm passes through human choice — the same challenge tobacco and opioid plaintiffs fought for decades before courts accepted aggregated injury theories.
Product liability is how injured people hold powerful industries accountable when self-regulation fails. Whether courts extend it to AI chatbots will determine whether the $600B+ AI industry faces the same legal reckoning that reshaped tobacco, asbestos, and opioid manufacturing.
People often assume product liability requires proving a company acted recklessly. Under strict liability, intent doesn't matter — if the product is unreasonably dangerous and causes harm, the seller is liable even without knowledge of the defect.
Product liability is how injured people hold powerful industries accountable when self-regulation fails. Whether courts extend it to AI chatbots will determine whether the $600B+ AI industry faces the same legal reckoning that reshaped tobacco, asbestos, and opioid manufacturing.
People often assume product liability requires proving a company acted recklessly. Under strict liability, intent doesn't matter — if the product is unreasonably dangerous and causes harm, the seller is liable even without knowledge of the defect.