ALEXANDRIA, Va., Sept. 17 -- United States Patent no. 12,418,850, issued on Sept. 16, was assigned to T-Mobile USA. Inc. (Bellevue, Wash.).

"Disabling roaming in overlapping coverage areas of wireless telecommunications networks" was invented by Romil Kumar Sood (Bothell, Wash.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A telecommunications network provides selective roaming for user equipment (UE) devices registered to the network, allowing some UE devices to operate on a roaming network in some geographic regions and disallowing other UE devices to access roaming networks. While a target UE device is operating on a roaming network, the telecommunications network monitors changes in location of the targ...