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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How does the specification affect claim interpretation?

The specification plays a crucial role in claim interpretation. According to the MPEP, “The best source for determining the meaning of a claim term is the specification – the greatest clarity is obtained when the specification serves as a glossary for the claim terms.” (MPEP 2111.01) The specification can affect claim interpretation in several ways:…

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Can the interpretation of transitional phrases in patent claims be affected by the specification?

Yes, the interpretation of transitional phrases in patent claims can be significantly affected by the specification. The MPEP 2111.03 emphasizes the importance of considering the specification when interpreting transitional phrases: “The determination of what is or is not excluded by a transitional phrase must be made on a case-by-case basis in light of the facts…

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How does the “species anticipates genus” principle apply in patent law?

The “species anticipates genus” principle is a fundamental concept in patent law, particularly in anticipation analysis. According to MPEP 2131.02, “A generic claim cannot be allowed to an applicant if the prior art discloses a species falling within the claimed genus.” This means that if a prior art reference discloses a specific example (species) that…

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What is the “single structural similarity” requirement for Markush groups?

What is the “single structural similarity” requirement for Markush groups? The “single structural similarity” requirement for Markush groups refers to a common structure or feature shared by all members of the group. According to MPEP 2117, this requirement is essential for a proper Markush grouping: “Members of a Markush group share a ‘single structural similarity’…

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What is the relationship between single means claims and property-dependent claims?

The MPEP draws a parallel between single means claims and claims that depend on a recited property: When claims depend on a recited property, a fact situation comparable to Hyatt is possible, where the claim covers every conceivable structure (means) for achieving the stated property (result) while the specification discloses at most only those known…

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