(March 24, 2022, 1:56 PM EDT) -- WASHINGTON, D.C. — The Patent Trial and Appeal Board erred when it declared three claims of a patented method for establishing a network connection obvious over a reference relating to a system for establishing a secondary channel between computers via telephone connection, Uniloc 2017 LLC maintains in a March 21 appellant brief filed with the Federal Circuit U.S. Court of Appeals....