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Federal Circuit

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Regents of University of Minnesota v. Gilead Sciences — Federal Circuit Affirms Invalidity of Antiviral Drug Patent for Lack of Written Description

The Federal Circuit affirmed the PTAB’s ruling that the University of Minnesota’s antiviral drug patent—directed to phosphoramidate prodrugs of nucleoside derivatives—lacked adequate written description support for its broad genus claims, because the patent’s specification disclose

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ChromaDex v. Elysium Health — Federal Circuit Holds Isolated Vitamin B3 Supplement Patent Invalid Under § 101

The Federal Circuit affirmed that patent claims directed to isolated nicotinamide riboside (NR)—a form of vitamin B3 found naturally in cow’s milk—are directed to a natural phenomenon and ineligible under § 101, because the claims effectively read on milk with only the isolation step as a diff

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