Expert Witnesses in Product Liability Cases — Why They Win or Lose Your Claim

## Why Expert Testimony Is Central to Product Liability Claims

Product liability cases are decided by juries of ordinary people who cannot independently evaluate whether a medical device was correctly designed, whether a pharmaceutical's risk-benefit profile met industry standards, or whether an automotive component failed due to a manufacturing defect. Expert witnesses translate complex technical questions into clear testimony that juries can understand and evaluate. Without qualified, credible experts, even the strongest product liability case is unlikely to survive a Daubert challenge or persuade a jury.

The expert witness battle in product liability cases is often the decisive factor — manufacturers spend millions retaining engineers, physicians, and scientists to counter plaintiff experts, and the outcome often turns on whose expert is more credible.

The Essential Expert Types in Product Liability Cases

No single expert can address all the dimensions of a product liability claim. Experienced product liability attorneys build a team that covers each required element of proof.

• **Engineering and design experts:** Evaluate whether the product's design met industry standards, whether a safer alternative design existed, and how the specific defect arose in your case
• **Manufacturing quality experts:** Examine the production process to identify where in the manufacturing chain the defect was introduced
• **Biomechanical engineers:** Analyze how the product failure translated into specific injuries, connecting the defect to the harm you suffered
• **Medical experts:** Establish causation between the defective product and your specific diagnosis — essential in pharmaceutical and medical device cases
• **Life care planners:** Project future medical costs and care needs for permanently injured plaintiffs
• **Forensic accountants and economists:** Quantify lost wages and future earning capacity
• **FDA regulatory experts:** Testify about whether the product met regulatory standards and what the manufacturer's obligations were under applicable regulations

Evaluating Your Attorney's Expert Network

The quality of your attorney's expert relationships is a direct indicator of their product liability experience. Ask these specific questions during your consultation.

• Have they retained experts in your specific product category before?
• Have their experts testified in federal court and survived Daubert admissibility challenges?
• Do their experts have publications or professional standing in their field (not just paid litigation consultants)?
• How quickly can they engage experts to preserve and examine physical evidence before it degrades?

An attorney who cannot give you specific answers to these questions may not have the expert network required to win a contested product liability case against a well-funded manufacturer.