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ARCELORMITTAL FRANCE v. AK STEEL CORP.

No. 2011-1638.

700 F.3d 1314 (2012)

ARCELORMITTAL FRANCE and ArcelorMittal Atlantique Et Lorraine, Plaintiffs-Appellants, v. AK STEEL CORPORATION, Defendant-Appellee, and Severstal Dearborn, Inc. and Wheeling-Nisshin Inc., Defendants-Appellees.

United States Court of Appeals, Federal Circuit.

November 30, 2012.

Attorney(s) appearing for the Case

Constantine L. Trela, Jr. , Sidley Austin LLP, of Chicago, IL, argued for plaintiffs-appellants. With him on the brief were David T. Pritikin And Constantine Koutsoubas . Of counsel on the brief were Jeffrey B. Bove and Chad S.C. Stover , Connolly Bove Lodge & Hutz LLP, of Wilmington, DE.

Christopher N. Sipes , Covington & Burling, LLP, of Washington, DC, argued for all defendants-appellees. With him on the brief were Roderick R. McKelvie and Jeffrey H. Lerner for AK Steel Corporation. Of counsel on the brief were Richard W. Hoffmann and David J. Simonelli , Reising Ethington, PC, of Troy, Michigan for Severstal Dearborn, Inc, et al.

Opinion for the court filed by Circuit Judge DYK. Opinion dissenting-in-part filed by Circuit Judge WALLACH.

DYK, Circuit Judge.

ArcelorMittal France and ArcelorMittal Atlantique et Lorraine (collectively "ArcelorMittal") appeal from a final judgment of the United States District Court for the District of Delaware. The judgment is based on a jury verdict finding that defendants AK Steel Corporation, Severstal Dearborn, Inc., and Wheeling-Nisshin Inc. ("AK Steel") did not infringe ArcelorMittal's U.S. Patent No. 6,296,805 ("the '805 patent") and that the asserted claims were...

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