Can extrinsic evidence be used to interpret patent claim terms?
Can extrinsic evidence be used to interpret patent claim terms? Yes, extrinsic evidence can be used to interpret patent claim terms, but it is generally considered less significant than intrinsic evidence. The MPEP 2111.01 provides guidance on this matter: “Extrinsic evidence may be used to interpret claims if the intrinsic evidence does not establish the…
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