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904.01(b) Equivalents - 900 Prior Art, Classification, and Search
904.01(b) Equivalents
All subject matter that is the equivalent of the subject matter as defined in the claim, even though specifically different from the definition in the claim, must be considered unless expressly excluded by the claimed subject matter. See MPEP § 2181 - § 2184 for a discussion of equivalents when a claim employs means or step plus function terminology.
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