Posts Tagged: "01 Communique Lab. v. Citrix Sys"

Reexam Claim Construction Thwarts Subsequent Infringement Claim

In 01 Communique Lab v. Citrix Systems, the Federal Circuit rejected Communique’s appeal. The court properly relied on a comparison of the allegedly infringing GoToMyPC product to the asserted patent claims, as shown by careful jury instructions. Citrix’s comparison to the BuddyHelp prior art, in aid of a legitimate defense, did not cause prejudice to Communique. In reaching its decision, the Court noted that claim terms must be construed the same way for both invalidity and infringement. Thus, if a narrow construction was appropriate for validity in the reexamination to avoid the prior art, a broader construction should not be applied against alleged infringers.