( December 11, 2024, 2:01 PM EST) -- WASHINGTON, D.C. — The U.S. Patent Trial and Appeal Board (PTAB) was correct to rule in favor of multiple communications technology companies that sought inter partes review (IPR) of a now-expired mobile communications patent, a Federal Circuit U.S. Court of Appeals panel held Dec. 10; the panel affirmed PTAB’s finding that the challenged claims were unpatentable as obvious....