Patent Law Practice Center

Cisco Attack On VirnetX On Network Security Patent Among Reexamination Requests Filed Week Of 7/5/11

Here is the latest installment of Reexamination Requests from Scott Daniels, of Reexamination Alert and Practice Center Contributor…

Late Friday, Cisco requested reexamination of VirnetX’s U.S. Patent No. 6,502,135 entitled “Agile network protocol for secure communications with assured system availability” (see inter partesRequest No. (6)).  The two companies are parties to an infringement action over the ‘135 patent in the Eastern District of Texas.

Shell Oil and Alcoa also countered infringement allegations by requesting reexamination of the patents-in-suit (see inter partesRequest Nos. (3) & (4)). (more…)