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This is a list of special types of claims that may be found in a patent or patent application.For explanations about independent and dependent claims and about the different categories of claims, i.e. product or apparatus claims (claims referring to a physical entity), and process, method or use claims (claims referring to an activity), see Claim (patent), section "Basic types and categories".
Similarly, it may be unclear whether a "base" includes a "set of legs." A dependent claim, including the phrase, "wherein said base comprises a set of legs," if allowed by the patent examiner, clarifies that the word "base" in the independent claim does not necessarily include legs. In practice, dependent claims are often used to home in on the ...
A claim chart is a widely used device in patent infringement litigation. [1] It is a convenient and effective means for analyzing and presenting information regarding a patent claim .
The preamble, which is sometimes also called "pre-characterizing portion", [11] includes all the features of the claim that in combination are known in a prior art document, namely the closest prior art. The characterizing part includes the other features, i.e., those not known in the prior art document used to draft the claim in a two-part form.
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