( November 12, 2025, 9:15 AM EST) -- WASHINGTON, D.C. — A Federal Circuit U.S. Court of Appeals panel split in one of two related appeals, upholding some findings by the U.S. Patent Trial and Appeal Board (PTAB) that claims in a technology company’s patent describing a biometric payment card security system were unpatentable as obvious but reversing as to other claims; the panel majority wrote that PTAB lacked substantial evidence to support its construction of a disputed claim phrase involving where the described device stores data in memory....