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In defense of its patent rights, ArcelorMittal filed complaints before the District Court of Delaware on April 16 to demonstrate that AK Steel, Severstal North America (SNA) and SNA's coating partner, WheelingNisshin, have infringed its Usibor® aluminum silicon coated products patent (Usibor®-AS) by selling steel grades protected under the Usibor®-AS patent to automakers and their supply chains.
The decision follows the United States Patent and Trademark Office's reissuance of...