Mealey's (January 14, 2020, 10:04 AM EST) -- WASHINGTON, D.C. — In a Dec. 23 reply brief, an unsuccessful inter partes review (IPR) petitioner tells the Federal Circuit U.S. Court of Appeals that the Patent Trial and Appeal Board erred when it upheld as patentable various claims of a technique for testing electronic circuits with a laser (Hamamatsu Photonics K.K. v. SEMICAPS Pte. Ltd., No. 19-1890, Fed. Cir.)....