MPEP 2600

Optional Inter Partes Reexamination

Brief Summary:

This chapter discusses inter partes reexamination proceedings. These involve the initiator of the reexamination as well as the patent holder and an examiner. Many of the characteristics of an inter partes reexamination proceeding are identical to that of the ex parte reexamination proceedings discussed in chapter 2200. The major differences with inter partes proceedings are outlined here in this chapter.

Key Terms:

AppealAn appeal is the process by which a party requests a higher authority, such as a patent appeals board or court, to review and change the decision of a lower authority regarding a patent application or dispute.
Citation of Prior ArtCitation of prior art involves referencing existing documents or inventions that are relevant to assessing the novelty and non-obviousness of a patent application, helping to determine its patentability.
Collateral EstoppelCollateral estoppel is a legal principle that prevents a party from re-litigating an issue that has already been resolved in a previous case involving the same parties.
Inter PartesInter Partes refers to proceedings or actions involving opposing parties, such as inter partes review, where a third party can challenge the validity of a granted patent before a patent office.
ReexaminationReexamination is a process where a patent office reevaluates the validity of an existing patent’s claims based on new evidence or prior art, potentially leading to confirmation, amendment, or cancellation of the patent.
Res JudicataRes Judicata is a legal doctrine preventing the same dispute between the same parties from being litigated more than once after a final judgment has been rendered.

37 CFR (Code of Federal Regulations):

37 CFR 1.501 – Citation of prior art in patent files.
37 CFR 1.501 allows for the submission of prior art citations in patent files, enabling third parties to provide relevant information that may affect the patentability of an invention.
37 CFR 1.111 – Reply by applicant or patent owner to a non-final Office action.
37 CFR 1.111 details the procedures for applicants or patent owners to respond to a non-final Office action, including requirements for addressing objections and rejections to advance the examination process.

35 USC (United States Code):

35 USC 141 – Appeal to the Court of Appeals for the Federal Circuit.
35 USC 141 provides the right for applicants, patent owners, or adverse parties to appeal decisions from the Patent Trial and Appeal Board to the United States Court of Appeals for the Federal Circuit.
35 USC 301 – Citation of prior art and written statements.
35 USC 301 allows any person to submit prior art and written statements to the USPTO to be considered in the reexamination of a patent, potentially impacting its validity.

Quick Statistics:

Number of Pages:  176 pgs
Sections:  2601 – 2696

List of Sections:

2601Introduction
 2601.01 Flowcharts
2602Citation of Prior Art
2603 – 2608[Reserved]
2609Inter Partes Reexamination
2610Request for Inter Partes Reexamination
2611Time for Requesting Inter Partes Reexamination
2612Persons Who May File a Request
2613Representative of Requester
2614Content of Request for Inter Partes Reexamination
2615Fee for Requesting Inter Partes Reexamination
2616Substantial New Question of Patentability/Reasonable Likelihood That Requester Will Prevail
2617Statement in the Request Applying Prior Art
2618Copies of Prior Art (Patents and Printed Publications)
2619Copy of Printed Patent
2620Certificate of Service
2621[Reserved]
2622Address of Patent Owner
2623Withdrawal of Attorney or Agent
2624Correspondence
2625Untimely Paper Filed Prior to First Office Action
2626Initial Processing of Request for Inter Partes Reexamination
2627Incomplete Request for Inter Partes Reexamination
2628[Reserved]
2629Notice of Request for Inter Partes Reexamination in Official Gazette
2630Constructive Notice to Patent Owner
2631Processing of Request Corrections
2632Public Access
 2632.01 Determining If a Reexamination Request Was Filed for a Patent
2633[Reserved]
2634Fee Processing and Procedure
2635Record Systems
2636Assignment of Reexamination
2637[Reserved]
2638Time Reporting
2639[Reserved]
2640Decision on Request
2641Time for Deciding Request
2642Criteria for Deciding Request
2643Claims Considered in Deciding Request
2644Prior Art on Which the Determination Is Based
2645[Reserved]
2646Decision Ordering Reexamination
2647Decision Denying Reexamination
 2647.01 Examples of Decisions on Requests
 2647.02 Processing of Decision
2648Petition From Denial of Request
2649 – 2653[Reserved]
2654Conduct of Inter Partes Reexamination Proceedings
2655Who Reexamines
2656Prior Art Patents and Printed Publications Reviewed by Examiner in Reexamination
2657Listing of Prior Art
2658Scope of Inter Partes Reexamination
2659Res Judicata and Collateral Estoppel in Reexamination Proceedings
2660First Office Action
 2660.01 [Reserved]
 2660.02 The Title
 2660.03 Dependent Claims
2661Special Status for Action
2662Time for Response and Comments
2663[Reserved]
2664Mailing of Office Action
2665Extension of Time for Patent Owner Response
2666Patent Owner Response to Office Action
 2666.01 Amendment by Patent Owner
 2666.02 Correction of Patent Drawings
 2666.03 Correction of Inventorship
 2666.04 Fees for Adding Claims
 2666.05 Third Party Comments After Patent Owner Response
 2666.06 Service of Papers
 2666.07-2666.09 [Reserved]
 2666.10 Patent Owner Does Not Respond to Office Action
 2666.11 – 2666.19 [Reserved]
 2666.20 Third Party Does Not Comment After Patent Owner Response
 2666.21 – 2666.29 [Reserved]
 2666.30 Submission Not Fully Responsive to Non-final Office Action
 2666.31 – 2666.39 [Reserved]
 2666.40 Patent Owner Completion of Response and Third Party Comments Thereon
 2666.41-2666.49 [Reserved]
 2666.50 Examiner Issues Notice of Defective Paper in Inter Partes Reexamination
 2666.51-2666.59 [Reserved]
 2666.60 Response by Patent Owner/Third Party to Notice of Defective Paper
2667Handling of Inappropriate or Untimely Filed Papers
2668Petition for Entry of Late Papers for Revival of Reexamination Proceeding
2669[Reserved]
2670Clerical Handling
2671Examiner Action Following Response/Comments or Expiration of Time for Same
 2671.01 Examiner Issues Action on Merits That Does Not Close Prosecution
 2671.02 Examiner Issues Action Closing Prosecution (ACP)
 2671.03 Panel Review
2672Patent Owner Comments/Amendment After ACP and Third Party Requester Responsive Comments
2673Examiner Consideration of Submissions After ACP and Further Action
 2673.01 Reopening Prosecution After ACP
 2673.02 Examiner Issues Right of Appeal Notice (RAN)
2674Appeal in Inter Partes Reexamination
 2674.01 Cross Appeal After Original Appeal
2675Appellant Brief
 2675.01 Respondent Brief
 2675.02 Informalities in One or More of the Briefs
2676Appeal Conference
2677Examiner’s Answer
2678Rebuttal Briefs
2679Office Treatment of Rebuttal Brief
2680Oral Hearing
2681Board Decision
2682Action Following Decision
2683Appeal to Courts
2684Information Material to Patentability in Reexamination Proceeding
2685No Interviews on Merits in Inter Partes Reexamination Proceedings
2686Notification of Existence of Prior or Concurrent Proceedings and Decisions Thereon
 2686.01 Multiple Copending Reexamination Proceedings
 2686.02 Copending Reexamination and Interference Proceedings
 2686.03 Copending Reexamination and Reissue Proceedings
 2686.04 Reexamination and Litigation Proceedings
 2686.05 Reexamination and Inter Partes Review Proceedings, Post-Grant Review, and Covered Business Method Patent Review
2687Notice of Intent to Issue Inter Partes Reexamination Certificate (NIRC) and Conclusion of Reexamination Proceeding
 2687.01 Examiner Consideration of Submissions After NIRC
2688Issuance of Inter Partes Reexamination Certificate
2689Reexamination Review
2690Format of Inter Partes Reexamination Certificate
2691Notice of Inter Partes Reexamination Certificate Issuance in Official Gazette
2692Distribution of Certificate
2693Intervening Rights
2694Concluded Reexamination Proceedings
2695Reexamination of a Reexamination
2696USPTO Forms To Be Used in Inter Partes Reexamination

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