ALEXANDRIA, Va., May 26 -- United States Patent no. 12,640,937, issued on May 26, was assigned to Schneider Electric USA Inc. (Boston).

"Device genuineness certificate deprecation without certificate revocation" was invented by Michael Pyle (Hermitage, Tenn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Embodiments described herein provide techniques for securely validating firmware on a device using certificates and providing a mechanism for deprecating select certificates when a traditional certificate authority is unavailable or otherwise cannot be used. When a first firmware package is installed on the device, a first certificate in a first secure memory location is associated with an active status. Res...