How do double patenting principles apply to reexamination proceedings?

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Source: FAQ (MPEP-Based) BlueIron Update: 2024-09-27 10 Rules 5 Related FAQs This page is an FAQ based on guidance from the Manual of Patent Examining Procedure. It is provided as guidance, with links to the ground truth sources. This is information only: it is not legal advice. Basic principles of double patenting do apply to reexamination proceedings. The MPEP states: “ Basic principles of double patenting apply to reexamination proceedings, as explained in this chapter and in MPEP Chapters 2200 and 2600 (see especially MPEP § 2258) .” This means that during a reexamination, examiners should consider double patenting issues. For detailed guidance on how double patenting is applied in reexamination proceedings, refer to MPEP Chapter 2200 , MPEP Chapter 2600 , and specifically MPEP § 2258 . Related Rules from the Manual of Patent Examining Procedure 10 rules Collapse Double Patenting Issue in Reexamination MPEP 2258 Double Patenting Considered in Reexamination MPEP 2258 Issue of Double Patenting During Examination MPEP 2258 Double Patenting Issues During Reexamination MPEP 2258 Permitted Issue of Double Patenting Must Be Evaluated During Reexamination MPEP 2258 Examiner Must Determine Double Patenting Rejection Appropriateness MPEP 2258 Recommended Double Patenting Consideration During Reexamination MPEP 2258 Double Patenting Considered in Ex Parte Reexamination MPEP 2258 Examiner Must Determine Double Patenting Question MPEP 2258 Recommended Issues Not Resolved in Reexamination Must Be Addressed Through Reissue MPEP 2258 Permitted Other Related FAQs 5 FAQs Collapse Can foreign priority or domestic benefit be claimed during inter partes reexamination? How are claims construed in ex parte reexamination? How are claims interpreted in ex parte reexamination? Can double patenting rejections be made in ex parte reexamination? Can the scope of patent claims be enlarged during ex parte reexamination?