Validity Of Root Canal File Patent Disputed On Appeal To Federal Circuit

(February 28, 2017, 7:20 AM EST) -- WASHINGTON, D.C. — An August 2016 ruling by the Patent Trial and Appeal Board that invalidated all claims of a patented process for reducing the superelasticity of endodontic files was erroneous, the patent owner recently told the Federal Circuit U.S. Court of Appeals (Gold Standard Instruments LLC v. U.S. Endodontics LLC, No. 16-2597, Fed. Cir.)....