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August 07, 2025

Message Received – Delaware Follows Federal Rule of Evidence 702

Faegre Drinker on Products blog

The Delaware Superior Court took the mass tort world by surprise with its May 31, 2024, refusal to exclude the plaintiffs’ experts’ causation opinions in the Zantac litigation, breaking with the federal MDL court’s prior exclusionary order and applying Delaware Rule of Evidence 702 “with a liberal thrust favoring admission.” The ruling was so unexpected that some outlets questioned whether Delaware courts would become a new preferred venue for mass tort plaintiffs. But, in a rare move, the Delaware Supreme Court granted the defendants’ request for interlocutory appeal — despite the Superior Court’s refusal to certify the order — and has now restored order, reversing the Superior Court’s decision and remanding for further proceedings. In re Zantac (Ranitidine) Litig., --- A.3d ---, 2025 WL 1903760 (Del. July 10, 2025). 

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