Iarnach Technologies Limited, a plaintiff tied to Dublin-based monetization firm Atlantic IP Services, has filed its first litigation, suing AT&T (AT&T Mobility and several other subsidiaries) (2:23-cv-00231) in an Eastern District of Texas complaint. Five optical networking patents are asserted, with infringement allegations focused on the provision of “all components necessary”—including “hardware and software, optical line terminals (ONTs), and optical network units (ONUs)/optical network terminals (ONTs)”—in providing its fiber-optic networks and network services. Iarnach received the patents from ZTE earlier this year.