(August 31, 2018, 8:40 AM EDT) -- WASHINGTON, D.C. — A patent relating to a successful and lucrative outdoor clothing product line was erroneously deemed anticipated and rendered obvious by prior art, Columbia Sportswear North America Inc. maintains in an appeal to the Federal Circuit U.S. Court of Appeals (Columbia Sportswear North America Inc. v. Serius Innovative Accessories Inc., Nos. 18-1329, -1331, -1728, Fed. Cir.)....