Product liability defense addresses claims that a product’s design, manufacture, warnings or instructions caused harm. TKST assists businesses facing product-related litigation by examining the product history, distribution chain, use conditions and evidence supporting the alleged connection between the product and the injury.
Where TKST can help
Product allegations
Disputes involving design, manufacture, warnings, instructions or warranty issues.
Supply-chain roles
The responsibilities and records of manufacturers, distributors and retailers.
Technical evidence
Product condition, inspection, testing and the need for qualified experts.
Preserve the product before its condition changes
The physical item can be central to the dispute. Its condition, packaging, maintenance history and chain of custody may help explain what occurred. Avoid informal testing or alteration before counsel addresses a preservation and inspection plan. Business records matter too: production details, supplier communications, warnings in effect at the relevant time and customer reports may place the allegation in context. A defensible account separates what was observed from what has only been assumed.
Identify the product with precision
Record the model, serial or lot number, production date if available, and identifying labels. Similar-looking products may have different designs, components, instructions, or suppliers. Determine whether the item can be located and who currently controls it. Preserve photographs of its condition and surroundings without altering the evidence. The first description received from a customer or claimant may be incomplete and should be verified where possible.
Trace the product through manufacture, distribution, sale, installation, maintenance, and use. Identify modifications, replacement components, repairs, and prior incidents. Keep transaction and service records in their original form. The point is not to assume that a later change caused the accident, but to build an accurate history that allows counsel and qualified experts to evaluate competing explanations.
Preserve the item before inspection becomes a dispute
Physical evidence may be uniquely important. Ask counsel how to arrange secure storage, document custody, and coordinate inspection with interested parties. Avoid destructive testing, disassembly, repair, or disposal without an appropriate plan. Even well-intended attempts to find the cause can change the condition that other parties need to examine. Document necessary safety measures and the reason for them.
Preservation should extend to packaging, manuals, warnings, accessory components, and electronic data associated with the product where relevant. Surveillance footage, machine logs, and connected-device records may have short retention cycles. Identify those sources promptly. A preservation plan should account for technical and safety considerations rather than treating the product as an ordinary document that can simply be copied.
Separate the alleged defect from the cause of injury
Claims may concern design, manufacture, warnings, negligence, warranty, or several theories together. Each requires its own analysis under the governing law. Determine what feature or conduct is alleged to be wrong and how it supposedly caused the injury. A defect allegation that is not connected to the actual incident may leave an important gap; the defense should test that connection with evidence.
Technical work may involve design specifications, testing, quality-control records, alternative explanations, and the conditions of use. Experts should receive the full relevant record, including unfavorable information and uncertainties. Their analysis should identify what the evidence supports and where assumptions remain. Marketing language, regulatory submissions, and prior internal evaluations should be reviewed for consistency with the position taken in litigation.
Evaluate the role of each business in the chain
A manufacturer, importer, distributor, retailer, installer, and maintenance provider may have different responsibilities and defenses. Confirm which entity performed each function rather than relying on a brand name. Applicable law can distinguish among these roles. The contracts and actual conduct both matter, particularly when services, installation, or later modifications form part of the allegation.
Review potentially applicable insurance and contractual defense or indemnity provisions promptly. Preserve the version of the agreement in effect for the relevant product or transaction. Notice and cooperation requirements may require action before the facts are fully developed. A disagreement over allocation among businesses can create a related contract dispute, but it does not eliminate the need to respond to the underlying injury claim.
What to have ready for an initial conversation
- Product identity, serial or lot number and current location
- Photographs and information about storage or handling
- Applicable instructions, warnings and warranty terms
- Manufacturing, distribution and maintenance records
Start with general information. The firm must assess conflicts and the scope of representation before receiving sensitive records.
Questions to help you take the next step
Is every product-related injury proof of a defect?
No. The claim requires analysis under the applicable law, including the alleged defect and causation. Product condition, use and other circumstances can be important to that analysis.
Should a business arrange testing immediately?
Preserve the item and consult counsel about an appropriate inspection and testing protocol. Uncoordinated or destructive testing can change evidence needed by the parties.
Can a retailer or distributor be named in the lawsuit?
Multiple participants in the distribution chain may be named. Each party’s role, contractual obligations and potential defenses should be evaluated separately.
Updated October 7, 2026. General information, not legal advice. The applicable law and procedure depend on the facts.