How does the USPTO determine if an SNQ exists for patent reexamination?

The USPTO determines if a substantial new question of patentability (SNQ) exists for patent reexamination through a careful evaluation process. According to MPEP 2242: “If a reexamination request relies on references already considered by the Office, the request must demonstrate that a substantial new question of patentability is raised by the art, when the art…

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What is the difference between a “substantial new question of patentability” and a “prima facie case of unpatentability”?

The concepts of a “substantial new question of patentability” (SNQ) and a “prima facie case of unpatentability” are distinct in patent law, particularly in the context of reexamination proceedings. According to MPEP 2242: It is not necessary that a ‘prima facie’ case of unpatentability exist as to the claim in order for ‘a substantial new…

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