Federal Circuit Affirms PTAB Ruling That Prior Art and FDA Skepticism Supports Non-Obviousness Finding

The U.S. Court of Appeals for the Federal Circuit recently affirmed the Patent Trial and Appeal Board’s (PTAB’s) decision upholding the patentability of Eli Lilly & Co.’s patent claims directed to reducing toxicity of a chemotherapy agent. In so holding, the Federal Circuit cited the Food and Drug Administration’s (FDA’s) skepticism of the efficacy of the methods as evidence supporting non-obviousness. See Neptune Generics, LLC v. Eli Lilly & Co., Nos. 2018-1288, 2018-1290, 2019 U.S. App. LEXIS 12492 (Fed. Cir. Apr. 26, 2019) (Before Moore, Wallach, and Hughes, J.) (Opinion for the Court, Moore, J.) Neptune Generics, LLC, Fresenius Kabi USA, LLC, and Mylan Laboratories Ltd. (collectively, the Petitioners) filed three petitions for inter partes review (IPR) against claims 1-22 of U.S. Patent No. 7,772,209 (the ?209 patent) owned by Eli Lilly & Co. The ?209 patent generally relates to methods of administering folic acid and a…

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