It seems likely that Amgen Inc. v. Sanofi 598 U.S. 594 (2023) will be one of the most significant, if not the most significant Supreme Court patent decision of 2023. Its holding that a claim to a genus of antibodies must be enabled to the full scope of species within that genus was emphatic and—coming from our highest court—about as final as stare decisis can guarantee. Forty years ago, I was knee deep in U.S. Patent and Trademark Office (USPTO) and court proceedings on behalf of laser pioneer, Gordon Gould. A 1983 decision in Gould’s favor by an appellate court effectively shut down efforts by the USPTO and laser manufacturers to derail Gould’s patent portfolio, ultimately leading to widespread licensing of Gould’s patents. But there was one point in that 1983 decision that might be viewed as inconsistent with Amgen’s holding.

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