Mealey's (May 8, 2020, 1:06 PM EDT) -- WASHINGTON, D.C. — In a May 4 appellant brief filed with the Federal Circuit U.S. Court of Appeals, a hydraulic stabilization company urges reversal and remand of a final written decision by the Patent Trial and Appeal Board, which confirmed as patentable certain claims of a valve assembly patent (Power-Packer North America Inc., d/b/a Gits Manufacturing Co. v. G.W. Lisk Co. Inc., Nos. 2020-1250, -1323, Fed. Cir.)....