The assignor of a patented network security logging device that “broadcast” network security threats was not estopped from initiating an inter partes review of the patent, the U.S. Court of Appeals for the Federal Circuit has determined. However, the court also ruled that the Patent Trial and Appeal Board, in invalidated some of the patent’s claims, rendered an interpretation of the term “broadcast” that was overly broad, and the court therefore reversed that decision and remanded the case (Arista Networks, Inc. v. Cisco Systems, Inc., November 9, 2018, Prost, S.).

Case date: 09 November 2018
Case number: No. 2017-1525
Court: United States Court of Appeals, Federal Circuit

A full summary of this case has been published on Kluwer IP Law.


To make sure you do not miss out on regular updates from the Kluwer Patent Blog, please subscribe here.

Kluwer IP Law

The 2021 Future Ready Lawyer survey showed that 81% of the law firms expect to view technology as an important investment in their future ability to thrive. With Kluwer IP Law you can navigate the increasingly global practice of IP law with specialized, local and cross-border information and tools from every preferred location. Are you, as an IP professional, ready for the future?

Learn how Kluwer IP Law can support you.

Kluwer IP Law
This page as PDF