(May 14, 2019, 11:08 AM EDT) -- WASHINGTON, D.C. — In a May 9 brief filed with the Federal Circuit U.S. Court of Appeals, an appellant maintains that the Patent Trial and Appeal Board erred in deeming 18 claims of a patented apparatus for improving solid-state imaging devices obvious (Collabo Innovations Inc. v. Sony Corporation, No. 19-1152, Fed. Cir.)....