Moreover, in Quantum, this court held that a violation of section 305 renders the enlarging claim invalid. Therefore, if the claims of the 331 patent were, in fact, broadened during reexamination, the district court judge properly granted summary judgment of invalidity. Whether amendments enlarge the scope of a claim is a matter of claim construction. See Minco, Inc. v. Therefore, this court reviews the district court s construction of both the original and reexamined claims to discern any change in claim scope.
Claim interpretation is the process of giving proper meaning to the claim language.
Claim language, after all, defines claim scope. See York Prods. Therefore, the language of the claim frames and ultimately resolves all issues of claim interpretation. In determining the meaning of disputed claim terms, however, a construing court considers the written description, the prosecution history, and extrinsic evidence. These additional sources provide a context to illuminate the meaning of claim terms.