Federal Circuit Confirms PTAB Standard of Review, PTAB Litigation Blog
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The Federal Circuit in Sisvel International S.A. v. Sierra Wireless, Inc. (Fed. Cir. Sept. 1, 2023) (Prost, Reyna, and Stark) affirmed a PTAB decision finding anticipated and/or obvious certain claims of two patents directed to the exchange of frequency information in connection with cell reselection between a mobile station (or user cell phone) and a central mobile switching center. On appeal, Sisvel challenged the Board’s (1) construction of a single claim term and (2) denial of Sisvel’s revised motion to amend the claims of one patent.
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