ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,425,685, issued on Sept. 23, was assigned to Universal Electronics Inc. (Scottsdale, Ariz.).

"System and method for detecting the removal of a controlling device" was invented by Gerben Meijer (Oosterbeek, Netherlands) and Patrick H. Hayes (Mission Viejo, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A system and method for using a controllable appliance to report an inoperable state of a controlling device. The appliance is caused to repeatedly determine, at a first predetermined timed interval, if a wireless notification signal, repeatedly transmitted by the controlling device at a second predetermined timed interval, has been received from t...