How does the written description requirement apply to genus claims?

The written description requirement for genus claims is particularly important and often challenging. MPEP 2304.02(d) states: “For generic claims, the genus can be adequately described if the disclosure presents a sufficient number of representative species that encompass the genus. If the genus has substantial variance, the disclosure must describe a sufficient variety of species to…

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What is the ‘representative number of species’ concept in written description?

The ‘representative number of species’ concept is crucial in demonstrating adequate written description for a claimed genus. The MPEP explains: “A “representative number of species” means that the species which are adequately described are representative of the entire genus. Thus, when there is substantial variation within the genus, one must describe a sufficient variety of…

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Can an original claim lack written description support?

Yes, an original claim can lack written description support. According to MPEP 2163.03: “While there is a presumption that an adequate written description of the claimed invention is present in the specification as filed, In re Wertheim, 541 F.2d 257, 262, 191 USPQ 90, 96 (CCPA 1976), a question as to whether a specification provides…

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How can a genus claim satisfy the written description requirement?

A genus claim can satisfy the written description requirement through sufficient description of a representative number of species. The MPEP 2163.05 provides guidance: “A ‘representative number of species’ means that the species which are adequately described are representative of the entire genus. Thus, when there is substantial variation within the genus, one must describe a…

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How does the USPTO handle species and genus claims in separate applications?

The USPTO has specific guidelines for handling species and genus claims in separate applications. According to MPEP 822, examiners are directed to “See MPEP § 806.04(h) to § 806.04(i) for species and genus in separate applications.” Key points about handling species and genus claims in separate applications include: Species claims are more specific embodiments of…

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