(August 2, 2019, 7:28 AM EDT) -- WASHINGTON, D.C. — Two companies that failed to persuade the Patent Trial and Appeal Board that a material processing patent would have been anticipated or obvious to a person of skill in the art maintain in a July 19 appellant brief filed with the Federal Circuit U.S. Court of Appeals July 19 that the board decision was premised on claim constructions that were unduly narrow (Bandit Industries Inc., et al. v. St. Martin Investments Inc., No. 19-1694, Fed. Cir.)....