Later in February, Headwater Research LLC added second Eastern District of Texas cases against AT&T (AT&T Mobility) (2:25-cv-00215) and Deutsche Telekom (Sprint, T-Mobile) (2:25-cv-00164) after filing a second suit earlier in the month against Verizon (Verizon Wireless) in the same district. The inventor-controlled plaintiff targets with five more patents a wide array of products, including cellular networks, servers, and services; eSIM provisioning and management components and systems; and eSIM-enabled devices ranging from smartphones to vehicle infotainment systems. 35 patents are now in suit in this campaign, the various defendants having filed 32 petitions for inter partes review (IPR) to date and litigation by Headwater Partners II LLC against all three defendants underway as well.