(January 2, 2018, 10:28 AM EST) -- WASHINGTON, D.C. — Although agreeing with the Patent Trial and Appeal Board that a grandparent patent application provides sufficient disclosure to satisfy the written disclosure requirement, the Federal Circuit U.S. Court of Appeals on Dec. 27 reversed and remanded findings that a working prototype reduced the claims to practice before the publication date of relevant prior art (Nintendo of America Inc. v. iLife Technologies Inc., No. 16-2266, Fed. Cir., 2017 U.S. App. LEXIS 26614)....