How is the phrase “an effective amount” interpreted in patent claims?
The interpretation of the phrase “an effective amount” in patent claims can vary depending on the context and disclosure. The MPEP provides the following guidance: The phrase may or may not be indefinite, depending on whether one skilled in the art could determine specific values based on the disclosure. It may be considered definite if…
Read MoreHow are numerical ranges in patent claims evaluated for definiteness?
Generally, the recitation of specific numerical ranges in a claim does not raise an issue of whether a claim is definite. However, there are certain situations where numerical ranges can lead to indefiniteness: When a narrow range falls within a broader range in the same claim, it may render the claim indefinite if the boundaries…
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