( June 19, 2025, 1:07 PM EDT) -- WASHINGTON, D.C. — A Federal Circuit U.S. Court of Appeals panel on June 18 rejected arguments from Sonos Inc. that the U.S. Patent Trial and Appeal Board (PTAB) was wrong to invalidate multiple claims in its patent related to the playback of music on a device controlled by another device, affirming the board’s finding that the patent was obvious as per prior art in inter partes review (IPR) proceedings brought by Google LLC....