Federal Circuit Affirms Invalidity Of Smart HVAC System Patent Claims

( July 11, 2025, 11:37 AM EDT) -- WASHINGTON, D.C. — In a pair of opinions, a panel in the Federal Circuit U.S. Court of Appeals affirmed decisions by the U.S. Patent Trial and Appeal Board (PTAB) that invalidated patents related to heating, ventilation and air conditioning (HVAC) held by EcoFactor Inc. in a series of inter partes review (IPR) proceedings brought by Google LLC, in the latest step in the battle between the companies over smart thermostat technologies....