How does the “broadest reasonable interpretation” apply to means-plus-function claim limitations?
The broadest reasonable interpretation (BRI) of means-plus-function claim limitations is subject to specific rules under 35 U.S.C. 112(f). According to MPEP 2111:
“The broadest reasonable interpretation of a claim element (also commonly referred to as a claim limitation) is limited by the description in the specification when 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, is invoked.”
This means that for means-plus-function limitations, the BRI is constrained by the corresponding structure, material, or acts described in the specification and their equivalents. Examiners must consider the specification when interpreting these claim elements, rather than relying solely on the broadest dictionary definition.
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Topics:
MPEP 2100 - Patentability,
MPEP 2111 - Claim Interpretation; Broadest Reasonable Interpretation,
Patent Law,
Patent Procedure