By: Audrey A. Millemann
In Marine Polymer Technologies, Inc. v. HemCon, Inc., 2012 U.S. App. LEXIS 5567 (Fed. Cir., March 15, 2012), the Federal Circuit Court of Appeals reversed an earlier decision by a panel of the court that had created uncertainty as to the rights of an infringer resulting from patent reexamination proceedings. The court held in a sharply split en banc decision that intervening rights arise in a patent reexamination only when the claims have been amended or are new. The decision overturned the panel’s September 2011 decision that held intervening rights arise even if the patent owner does not amend the claims, but merely even makes an argument that changes the meaning of the claims. The decision also reinstated a $29.4 million jury verdict for the plaintiff.
Marine Polymer owned a patent that covered a composition that was used in biomedical and pharmaceutical applications, including the treatment of wounds. The claims contained the limitation that the compositions were “biocompatible” (i.e., that the compositions were not highly reactive with living cells.
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By: James Kachmar
By: Zachary