Judge reaffirms decision in Arcelor patent suit

Nov 01, 2013 | 04:51 PM | Catherine Ngai

Tags  steel, automotive patent, ArcelorMittal, AK Steel, Wheeling-Nisshin, Severstal North America, Martin Szymanski, Judge Sue L. Robinson Catherine Nga

NEW YORK — A federal judge has reconfirmed a decision that automotive steels produced by Severstal North America LLC, Wheeling-Nisshin Inc. and AK Steel Corp. do not infringe a patent by ArcelorMittal France and ArcelorMittal Atlantique et Lorraine, according to documents filed at the U.S. District Court in Delaware.

The ruling, filed Oct. 25, concerns two patents at issue: the ‘805 and RE153. While there are several cases pending claiming different parts of the patent, the ruling addresses the original case filed in 2010 concerning steel with a tensile strength of 1,000 megapascals (MPa) (amm.com, Jan. 25, 2010). The other patent appeals—filed earlier this year—are still pending (amm.com, April 18). ....

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