The first case filed by Aspen Networks, Inc., in October against AT&T (AT&T Mobility), is just underway before Eastern District of Texas Judge Robert W. Schroeder III. The plaintiff, apparently backed by a prominent litigation funder, has now filed separate complaints against Deutsche Telekom (T-Mobile) (2:23-cv-00558) and Verizon (Verizon Wireless) (2:23-cv-00557) in the same district, alleging infringement of the same patent. Aspen Networks describes that patent as “the fundamental technology required to reliably switch connections from a Wi-Fi network to a cellular network and vice versa without dropping the call”. Again targeted is the support of Voice over Wi-Fi (VoWi-Fi) in the defendants’ cell networks.