Mealey's (May 29, 2020, 10:58 AM EDT) -- WASHINGTON, D.C. — The Federal Circuit U.S. Court of Appeals on May 19 denied as forfeited an inter partes review (IPR) petitioner’s challenge to the constitutionality of the Patent Trial and Appeal Board in light of Arthrex, Inc. v. Smith & Nephew, Inc.; two weeks earlier, on May 4, the petitioner filed an opening appellant brief in the case (Moderna Therapeutics Inc. v. Protiva Biotherapeutics Inc., No. 20-1184, Fed. Cir.)....