Assess an injury from a defective product — manufacturing, design, and failure-to-warn defects, preserving the product as evidence, the chain of defendants, and deadlines.
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Product liability claims generally rest on one of three theories. A manufacturing defect means the product left the factory different from its intended design — a single unit that was made wrong and broke or failed unexpectedly. A design defect means the entire product line is unreasonably dangerous even when made exactly as intended, because a safer alternative design was feasible. A 'failure to warn' (or marketing) defect means the product lacked adequate warnings or instructions about a non-obvious danger.
Identifying which theory fits matters because each is proven differently. Manufacturing defects usually require an engineer to examine the specific unit; design defects require expert evidence that a safer design was practical; failure-to-warn claims turn on the labels, manuals, and what the manufacturer knew about the risk. In the US, many states apply 'strict liability' to product claims, meaning you need not prove the manufacturer was careless — only that the product was defective and caused injury. Canadian product claims are generally framed in negligence, though the practical evidence required is similar.
The defective product itself is almost always the most important evidence in the case. Engineers and other experts examine the actual unit to establish the defect, so throwing it away, repairing it, returning it to the store, or continuing to use it can severely weaken or destroy an otherwise strong claim. If you still have the product, store it unchanged, photograph it from every angle, and keep the packaging, manual, warning labels, and receipt.
If the product was already discarded or returned, do not assume the claim is over — tell a lawyer immediately, because it may still be possible to recover it or to prove the defect by other means, such as recall records or identical exemplars. Check whether the product has been recalled: a manufacturer recall or safety notice can be powerful corroboration. Product cases frequently involve several defendants along the chain of distribution — manufacturer, distributor, and retailer — so identifying every party early helps preserve evidence across the board.
Product injury claims are subject to the general personal injury limitation period — commonly 2 years in most Canadian provinces and 2–3 years in most US states, running from the date of injury. Some US jurisdictions add a 'statute of repose' that bars claims a set number of years after the product was first sold, regardless of when the injury happened, which can cut off claims involving older products. Confirming both deadlines early is essential.
These cases are technical and often litigated against well-funded manufacturers, so they typically require engineering experts and can take longer than an ordinary injury claim. That expense is why lawyers screen product cases and usually reserve them for injuries serious enough to justify the investment. Preserving the product, documenting your injuries and losses, and getting an early merits review from a lawyer experienced in product liability give your claim the best chance of success.
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This wizard provides general legal information about defective product injury claims — not legal advice. Liability theories (including strict liability), limitation periods, and statutes of repose differ significantly between provinces and states. Preserve the product and consult a licensed personal injury lawyer in your jurisdiction before making claim decisions.
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