Palo Alto’s Second Failed Attempt to Nix Finjan Patent Affirmed

Finjan Inc.'s computer antivirus patent survived another round of attacks by rival cybersecurity firm Palo Alto Neworks Inc. after the Federal Circuit affirmed a patent office tribunal’s ruling.

The Patent Trial and Appeal Board upheld claims of U.S. Patent No. 8,141,154, related to protection against dynamically generated malicious code or viruses, over Palo Alto’s arguments the invention was obvious. The U.S. Court of Appeals for the Federal Circuit agreed in an nonprecedential opinion Wednesday.

This is the case’s second trip to the Federal Circuit. The appeals court remanded an earlier board decision upholding only some patent claims under a ...