On August 3, 2026, the California Supreme Court issued its decision in the closely watched Gilead Tenofovir Cases, No. S283862, — Cal.5th —, 2026 WL 2223748 (Cal. Aug. 3, 2026), rejecting the so-called “duty to innovate.” The court held, in a 6-1 decision, that “a drug manufacturer has no duty of care when deciding whether and when to develop and commercialize an allegedly safer alternative drug” to replace an admittedly nondefective drug. The decision is a significant victory for pharmaceutical manufacturers and carries substantial implications for product liability litigation across industries.

Background

The case arose from a Judicial Counsel Coordination Proceeding comprising more than 30,000 plaintiffs — HIV patients who took Gilead’s tenofovir disoproxil fumarate (TDF). Plaintiffs did not claim TDF was defective; it is undisputedly a life-saving medication. Instead, they alleged Gilead unreasonably delayed bringing an alternative medication, tenofovir alafenamide (TAF), to market, depriving them of a purportedly safer option and allegedly causing kidney, bone, or tooth injuries.

Continue reading “California Supreme Court Rejects Duty to Innovate”