Last November, Zilkr Cloud Technologies, LLC filed what appears to be its first patent case, suing RingCentral in the Northern District of Texas over four patents broadly directed to a “unified services platform system” that uses a telephone number to identify a user. Following the mid-April dismissal of that case for improper venue, the plaintiff has now turned to the Eastern District of Texas—and a different defendant, hitting Cisco (2:22-cv-00166) there with four patents, three of them overlapping with the set briefly at issue against RingCentral, and a fourth one new to litigation.