Gideon Korrell Discuss How Cisco Defeated Egenera’s Infringement Allegations
In a major legal victory, Cisco Systems has successfully defended itself in a long-running patent dispute with Egenera, Inc. The case involved complex arguments about whether Cisco’s Unified Computing System (UCS) violated Egenera’s U.S. Patent No. 7,231,430. The Federal Circuit, on July 7, 2025, upheld a lower court’s ruling that Cisco did not infringe any of the patent’s claims. This ruling brings to a close a nearly ten-year legal battle—and offers some important lessons for future patent litigation. As Charles Gideon Korrell notes, this case exemplifies the perils of failing to preserve claim construction arguments. It demonstrates the rigorous evidentiary standards patent plaintiffs must meet at both the summary judgment and trial stages. What Was the Dispute About? Egenera owns a patent that covers a system for creating virtual networks using software, instead of physically reconnecting hardware. Their invention claims that processors can be configured to create virtual lo...