In ArcelorMittal v. AK Steel Corp., [2016-1357] (May 16, 2017), the Federal Circuit affirmed the summary judgment invalidating claims 24 and 25 of U.S. Patent No. RE44153. On appeal, ArcelorMittal argued it never asserted claim 24 and 25, noting that ArcelorMittal … Continue reading Failure to Provide an Unconditional Covenant Not to Sue Kept Case and Controversy Alive