When should an interference be suggested during patent examination?

An interference should rarely be suggested until examination is completed on all other issues. According to MPEP 2303, “Each pending claim must be allowed, finally rejected, or canceled. Any appeal from a final rejection must be completed, including any judicial review. Any petition must be decided.” This means that examiners should resolve all other patentability…

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When can prior art be submitted under 37 CFR 1.501(a)?

Prior art can be submitted under 37 CFR 1.501(a) at any time during the period of enforceability of a patent. The MPEP explicitly states: 37 CFR 1.501(a) permits any person at any time during the period of enforceability of a patent to file a written submission. The period of enforceability typically includes: The entire term…

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When should the markedly different characteristics analysis be performed?

The markedly different characteristics analysis should be performed when evaluating nature-based product limitations in a claim. However, it’s important to note that not all claims containing nature-based products require this analysis. According to the MPEP, “Examiners should keep in mind that if the nature-based product limitation is naturally occurring, there is no need to perform…

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When is it appropriate to include sequences in patent drawings?

While sequences should generally be included in the Sequence Listing XML rather than duplicated in drawings, there are several situations where including sequences in patent drawings may be appropriate or necessary. According to MPEP 2412.06: “Many significant sequence characteristics may only be demonstrated by a figure. This is especially true in view of the fact…

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When should a request for interim extension be filed?

According to 37 CFR 1.760, as cited in MPEP 2755.01: “Any such request should be filed at least three months prior to the expiration date of the patent.“ However, the MPEP clarifies that this time frame is not mandatory: “While 37 CFR 1.760 provides that a request for an interim extension by the applicant ‘should’…

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What is an Interference Practice Specialist (IPS) and when should an examiner consult one?

An Interference Practice Specialist (IPS) is an expert in each Technology Center (TC) who must be consulted when suggesting an interference to the Board. Examiners should consult an IPS when they first become aware of a potential interference or when any interference issue arises during prosecution of an application. According to the MPEP, Examiners are…

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