March 17, 2026
The U.S. Patent and Trademark Office director declined Centripetal Networks' request to quash a challenge to its cybersecurity patent that was at issue in a since-nullified multibillion-dollar judgment against Cisco Systems, saying Tuesday that the Patent Trial and Appeal Board has not yet addressed the patent's validity.
February 20, 2026
Centripetal Networks Inc. has asked U.S. Patent and Trademark Office Director John Squires to undo a 2022 decision instituting review of a cybersecurity patent that was part of its since-vacated multibillion-dollar judgment against Cisco Systems, saying the decision conflicts with his current policies.
May 23, 2023
A handful of Silicon Valley tech companies persuaded a Patent Trial and Appeal Board panel on Tuesday to wipe out three claims in a patent owned by a small cybersecurity startup and asserted against Cisco to land a $2.75 billion judgment, which has since been rejected by the courts on unrelated issues connected to a now-deceased federal judge's stock profile.
February 07, 2023
The Patent Trial and Appeal Board has warned Virginia cybersecurity startup Centripetal against trying to use any more "baseless arguments," like the stock ownership of the patent judges, as the company defends a patent before the board that is also being asserted against Cisco in court.
February 07, 2023
The Patent Trial and Appeal Board on Tuesday blocked Kramer Levin Naftalis & Frankel LLP's Silicon Valley office managing partner from representing Centripetal Networks in a patent challenge, citing his 2021 sanctions for baselessly accusing Amazon of relying on antisemitism to win over a jury.
January 23, 2023
A cybersecurity company that lost its $2.75 billion victory against tech giant Cisco because of a stock purchase made by the wife of a late federal judge told the new judge overseeing the case on Monday not to wait out a ruling from the Patent Trial and Appeal Board — citing new revelations from the stock portfolio of one of the patent judges on the board.
January 05, 2023
The Patent Trial and Appeal Board on Wednesday refused to reconsider its decision to review a Centripetal Networks patent at issue in a nearly $3 billion judgment against Cisco Systems that has since been vacated, while also allowing Cisco and Keysight Technologies to join the case.
May 25, 2022
A trio of judges on the Patent Trial and Appeal Board said Wednesday that there was "a reasonable likelihood" a patent owned by a small Virginia cybersecurity startup should never have been issued in the first place and instituted a review, even though the startup already asserted the patent to win a multibillion-dollar judgment against Cisco almost two years ago.