Speir Technologies Limited has filed the fourth case of its sole litigation campaign in a fourth federal district, suing Lenovo (Motorola Mobility) (1:22-cv-02101) in the Northern District of Illinois. Prior defendants in the campaign include Samsung, sued in December 2021 in the Eastern District of Texas; Apple, in January in the Western District of Texas; and Alphabet (Google), in March in the Southern District of California. Asserted in the newest complaint is the one patent among the four-in-campaign at issue across all four cases, the Atlantic IP Services Limited plaintiff aiming it at each defendant’s provision of 5G mobile devices.