(January 30, 2017, 12:23 PM EST) -- WASHINGTON, D.C. — A Texas federal judge did not err in finding that a covenant not to sue barred a patent infringement action nor in holding that the defendant in the case failed to properly support its claim for damages in the form of attorney fees, the Federal Circuit U.S. Court of Appeals concluded Jan. 26 (Securus Technologies Inc. v. Global Tel*Link Corporation, Nos. 16-1470, -1506, Fed. Cir.; 2017 U.S. App. LEXIS 1376)....