Category Archives: Written Description

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Federal Circuit’s Primer on Equivalence Infringement of Chemical Process Patents

In an appeal characterized as “unusual,” the Federal Circuit affirmed the grant of a preliminary injunction, holding it likely that plaintiff patent holder would succeed on the merits its claim of infringement of a patent claiming a purified chemical compound, but reversed a finding of infringement under the doctrine of equivalents of related chemical process … Continue reading this entry

Inherent Disclosure Satisfied Written Description

In Yeda Research and Development Co., Ltd. v. Abbott GMBH & Co. KG, Slip Op. 2015-1662 (Fed. Cir. 2016), the Federal Circuit held that a claim to an isolated protein described by its partial amino acid sequence satisfies 35 U.S.C. § 112 (written description) when the partial sequence is combined with other identifying characteristics of … Continue reading this entry