On March 27, 2023, the U.S. Supreme Court heard oral arguments in Amgen Inc. v. Sanofi, a closely watched case on the issue of enablement under 35 U.S.C. § 112(a). Though not the main point of contention, the doctrine of equivalents (DOE) was brought up several times during oral arguments as an avenue to capture additional claim scope. Prior to the oral arguments, legal scholars had proposed, at least in the antibody context, to marry means-plus-function claim drafting to DOE as an approach to potentially salvage genus claims. This article provides some insights on the use of DOE in life sciences cases.
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