By Adam Fowles ( December 18, 2017, 12:22 PM EST) -- At the end of October, in MasterMine Software Inc. v. Microsoft Corp., the Federal Circuit Court of Appeals reversed a district court's determination that a system claim was invalid for indefiniteness. The Federal Circuit disagreed with the district court's conclusion that certain claims were indefinite for improperly claiming two different classes of subject matter.[1] The court found that the claims informed those skilled in the art with "reasonable certainty"[2] in conformity with the Nautilus guidance, specifically on the basis that one can determine when infringement occurs.[3]...
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