Chrimar Systems (also known as CMS Technologies) is a non-practicing entity that owns patents that it claims are essential to IEEE Power-over-Ethernet technology — amendments 802.3af and 802.3at to the IEEE 802.3 Ethernet standard. Chrimar has litigated several cases throughout the years based on these patents, including a (now-terminated) ITC case (Inv. No. 337-TA-817). Chrimar’s website lists several licensees for its Power-over-Ethernet patents, as well.
But now it looks like Chrimar’s standard-essential portfolio just got a little bit smaller. Yesterday, in Chrimar Systems v. Foundry Networks (now Brocade Communications Systems), the Federal Circuit affirmed a lower court ruling that had invalidated claims 14 and 17 of U.S. Patent No. 5,406,260.
Continue Reading Chrimar Systems’ Power-over-Ethernet claims found invalid on appeal