(February 28, 2017, 7:36 AM EST) -- WASHINGTON, D.C. — The Patent Trial and Appeal Board committed legal error when it misinterpreted a homonym while construing the claim term “determining a power factor,” a patent owner recently told the Federal Circuit U.S. Court of Appeals (Pentair Water Spa and Pool Inc. v. Hayward Industries Inc., No. 16-2598, Fed. Cir.)....