Mealey's (October 17, 2019, 12:24 PM EDT) -- WASHINGTON, D.C. — In an Oct. 15 appellant brief filed with the Federal Circuit U.S. Court of Appeals, an inter partes review (IPR) petitioner argues that a finding by the Patent Trial and Appeal Board that a valve assembly patent is not anticipated by prior art should be reversed or vacated (Power-Packer North America Inc. v. G.W. Lisk Company Inc., Nos. 2019-1902, -1965, Fed. Cir.)....