ALEXANDRIA, Va., June 12 -- United States Patent no. 12,302,453, issued on May 13, was assigned to T-Mobile USA Inc. (Bellevue, Wash.).
"MMS termination on different networks" was invented by Mehul Shah (Bellevue, Wash.) and Chingming Chao (Bellevue, Wash.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A mobile device, via a roaming platform, can switch IMSIs (e.g., Home IMSI-1, Roamer IMSI-2, etc.) depending on a location of the mobile device. Upon switching IMSIs, the roaming platform can forward the update location to an HLR of the home network and roaming network. If the MMSC on the home network receives an MMS message, the MMSC on the home network may query the HLR for a current location. From the query...