ArcelorMittal files new patent lawsuits

Apr 18, 2013 | 05:39 PM | Samuel Frizell

Tags  ArcelorMittal SA, AK Steel Corp., Severstal Dearborn LLC, Wheeling-Nisshin Inc., aluminum coated steel sheet, patent infringement, Samuel Frizell

NEW YORK — ArcelorMittal SA has filed two more lawsuits against AK Steel Corp., Severstal Dearborn Inc. and Wheeling-Nisshin Inc. for allegedly infringing on its patent for aluminized boron steel sheet products, continuing a legal battle that is now more than three years old.

ArcelorMittal alleges that West Chester, Ohio-based AK Steel, Dearborn, Mich.-based Severstal and Follansbee, W.Va.-based Wheeling-Nisshin produce steel that is processed by companies that infringe on an aluminum-coated-steel patent held by ArcelorMittal France and ArcelorMittal Atlantique et Lorraine.....

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