Network-1 Technologies, Inc. has added cases against three more defendants to its oldest litigation campaign, suing Hangzhou Hikvision Digital Technology (Hikvision) (2:22-cv-08050) and TP-Link (8:22-cv-01980) in separate Central District of California complaints, as well as Panasonic (2:22-cv-00430) in the Eastern District of Texas. These cases join four that the publicly traded plaintiff filed in early October in the District of Delaware, one against each of Arista Networks, Fortinet, Honeywell, and Ubiquiti. A single expired PoE patent has been asserted throughout, with infringement allegations targeting the provision of products that “distribute[] or use[] power transferred through Ethernet cables (‘Power over Ethernet’ or ‘PoE’), including Power Sourcing Equipment (‘PSEs’) and Powered Devices (‘PDs’) that are compliant with the IEEE 802.3af and 802.3at standards.