What is the standard for indefiniteness in patent claims?

The standard for indefiniteness in patent claims is based on the “reasonable certainty” test established by the Supreme Court. As stated in MPEP 2173.02: “A claim is indefinite when it contains words or phrases whose meaning is unclear. In re Packard, 751 F.3d 1307, 1314 (Fed. Cir. 2014). The test for definiteness under 35 U.S.C.…

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What is required for a specification to support a means-plus-function limitation?

For a specification to properly support a means-plus-function limitation, it must disclose the corresponding structure, material, or acts that perform the claimed function. The MPEP states: “The proper test for meeting the definiteness requirement is that the corresponding structure (or material or acts) of a means- (or step-) plus-function limitation must be disclosed in the…

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