Network-1 Technologies, Inc. has filed its first new litigation since 2018, suing Arista Networks (1:22-cv-01318), Fortinet (1:22-cv-01319), Honeywell (1:22-cv-01320), and Ubiquiti (1:22-cv-01321) over 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”. The publicly traded plaintiff asserts a single patent generally related to detecting PoE compatibility of networked devices via current probes and voltage sensing. The patent has been in suit since 2004 and is characterized in the new complaints as “the most important patent covering products that comply with the 802.3af standard” and as having generated more than $187M in licensing revenue over the years.