Cisco Denied New Trial After $1.9 Billion Security-Patent Loss

Cisco Systems Inc.’s request for a new trial after a $1.9 billion patent loss to a startup was rejected Wednesday by a Virginia federal judge, who said many of the networking company’s defenses at trial were unreasonable.

Judge Henry Morgan in the U.S. District Court for the Eastern District of Virginia left in place his October ruling that Cisco infringed four Centripetal Networks Inc. cybersecurity patents. The ruling followed a weekslong bench trial held over Zoom.

Cisco argued Morgan’s ruling included new theories of infringement and damages that Centripetal hadn’t presented, and that Cisco had no chance to defend ...