 U.S. Court of Appeals for the Federal Circuit Affirms Patent and Trademark Office decision upholding validity of ClearOne beamforming patent. SALT LAKE CITY, March 09, 2020 GLOBE NEWSWIRE -- ClearOne CLRO, a leading global provider of audio and visual communication solutions, today announced that the U.S. Court of Appeals for the Federal Circuit Federal Circuit issued a judgment last Friday affirming a January 2019 decision by the Patent Trial and Appeal Board PTAB of the United States Patent and Trademark Office PTO confirming the patentability of all claims of U.S. Patent No. 9,264,553 the 553 Patent. Shure challenged the validity of the 553 Patent through the inter partes review process in the PTO after ClearOne accused Shure of infringing multiple ClearOne patents covering fundamental BMA technology. 