(February 8, 2016, 1:10 PM EST) -- WASHINGTON, D.C. — A challenge to a judgment by the Patent Trial and Appeal Board that various claims of a stent patent were not proven invalid as obvious will stand, the Federal Circuit U.S. Court of Appeals ruled Feb. 5 (TriVascular Inc. v. Dr. Shaun L.W. Samuels, No. 15-1631, Fed. Cir.; 2016 U.S. App. LEXIS 1949)....