Appeals court sends patent ruling back for further review
Dec 03, 2012 | 05:44 PM
| Chris Prentice
NEW YORK A judgment in a patent lawsuit filed by ArcelorMittal SAs French units against AK Steel Corp., Severstal Dearborn Inc. and Wheeling-Nisshin Inc. has been sent back to U.S. District Court in Delaware for further review.
The U.S. Court of Appeals said a jury verdict that a U.S. patent for boron steel sheet with an aluminum-based coating held by ArcelorMittal France and ArcelorMittal Atlantique et Lorraine had not been infringed upon by the other steelmakers was based on an incorrect definition of the product.....
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