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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".
Claims can also be classified in categories, i.e. in terms of what they claim. A claim can refer to a physical entity, i.e. a product (or material) or an apparatus (or device, system, article, ...). The claim is then called respectively "product claim" or "apparatus claim"; or; an activity, i.e. a process (or method) or a use.
A plurality of independent claims in the same claim category are only allowable in the exceptional circumstances listed in Rule 43(2)(a), (b) and (c). The applicant has the burden of showing "that one of the exceptions under Rule 43(2) EPC apply". [12] Rule 43(2) is only applicable during examination proceedings, not in opposition proceedings. [13]
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 claims may contain one or more hierarchical sets of claims, each having one or more main, independent claim setting out the broadest protection, and a number of dependent claims which narrow that protection by defining more specific features of the invention. In the U.S., claims can be amended after a patent is granted, but their scope ...
The fact that an invention is patentable or even patented does not necessarily mean that use of the invention would not also infringe another patent. The first patent in a given area might include a broad claim covering a general inventive concept if there is at that point no relevant prior art.
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