(February 17, 2016, 10:52 AM EST) -- WASHINGTON, D.C. — A Virginia federal judge did not err in concluding that a claim for inventorship of a patented method of manufacturing a contact tip for use in metal inert gas welding, filed 10 years after the patent issued, is barred by laches, according to a Feb. 16 ruling by the Federal Circuit U.S. Court of Appeals (Hedwig Lismont v. Alexander Binzel Schweisstechnik GmbH & Co. KG, et al., No. 14-1846, Fed. Cir.)....