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PR Newswire

U.S. Court Confirms AK Steel Does Not Infringe on Patent

WEST CHESTER, Ohio, March 22, 2013 /PRNewswire/ -- AK Steel (NYSE: AKS) said that the United States Court of Appeals for the Federal Circuit denied, on March 20, 2013, ArcelorMittal's petition for re-hearing in its patent infringement lawsuit involving aluminized boron steel. This...