Last 2 Claims Of ArcelorMittal Steel Patent Axed

By Kelly Knaub (December 8, 2015, 8:19 PM EST) -- A Delaware federal judge on Friday invalidated an ArcelorMittal SA patent on a type of steel asserted against AK Steel Corp. and others, rejecting ArcelorMittal's argument that two claims that were reissued during an earlier appeal created genuine issues of material fact....

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