K.Mizra LLC has kicked off a fifth litigation campaign, filing separate lawsuits against AT&T (AT&T Mobility) (2:21-cv-00241), Deutsche Telekom (Sprint; T-Mobile) (2:21-cv-00242), and Verizon (Cellco Partnership d/b/a Verizon Wireless) (2:21-cv-00243) in the Eastern District of Texas. The sole patent-in-campaign generally relates to determining the location of “user equipment” through “particle filtering”, with the defendants accused of infringement over the provision of “mobile location services” within their various cellular networks (e.g., CDMA, LTE, and/or 5G), characterized as “instrumental in pinpointing a mobile user’s location for the provision of a myriad of location-based services”.