Mealey's (April 21, 2023, 7:44 AM EDT) -- WASHINGTON, D.C. — In a brief filed with the Federal Circuit U.S. Court of Appeals, an appellee defends findings by the Patent Trial and Appeal Board that two petitioners for inter partes review (IPR) failed to establish that a person of skill in the art (POSITA) would be motivated to modify and combine two prior art references to arrive at a claimed method for positioning a transcatheter heart valve....