MPEP § 2235 — Record Systems (Annotated Rules)

§2235 Record Systems

USPTO MPEP version: BlueIron's Update: 2025-12-31

This page consolidates and annotates all enforceable requirements under MPEP § 2235, including statutory authority, regulatory rules, examiner guidance, and practice notes. It is provided as guidance, with links to the ground truth sources. This is information only, it is not legal advice.

Record Systems

This section addresses Record Systems. Contains: 15 guidance statements and 1 permission.

Key Rules

Topic

Ex Parte Reexamination

9 rules
MPEP GuidanceRecommendedAlways
[mpep-2235-d502a606b6234b73687f5eee]
Retrieval of Reexamination File Data Required via OPSG
Note:
Office staff must use the One Patent Service Gateway (OPSG) to retrieve reexamination file data by entering the patent number and selecting continuity data.

The One Patent Service Gateway (OPSG) system is used to support the reexamination process. The sections below delineate OPSG related activities. (A) Reexamination File Data on OPSG — The routine OPSG retrieval transactions are used to obtain data on reexamination files. From the USPTO intranet site, Office staff can click on “Patent Data Portal” and then “General Information” which opens the General Information display. From here, select "search by" patent number and enter the patent number in the box. Then click on “Search” and when the “Patent Number Information” appears, click on “Continuity Data” to obtain the reexamination number.

Jump to MPEP SourceEx Parte ReexaminationExaminer Action Status Tracking
MPEP GuidanceRecommendedAlways
[mpep-2235-a39e22e73d38466e3f00a886]
Routine OPSG Retrieval for Reexamination Files
Note:
Office staff must use the One Patent Service Gateway (OPSG) system to retrieve data on reexamination files through routine retrieval transactions.

The One Patent Service Gateway (OPSG) system is used to support the reexamination process. The sections below delineate OPSG related activities. (A) Reexamination File Data on OPSG — The routine OPSG retrieval transactions are used to obtain data on reexamination files. From the USPTO intranet site, Office staff can click on “Patent Data Portal” and then “General Information” which opens the General Information display. From here, select "search by" patent number and enter the patent number in the box. Then click on “Search” and when the “Patent Number Information” appears, click on “Continuity Data” to obtain the reexamination number.

Jump to MPEP SourceEx Parte ReexaminationExaminer Action Status Tracking
MPEP GuidanceRecommendedAlways
[mpep-2235-d3d0e88f70cfc4ebf10b9fd3]
Search By Patent Number Required for OPSG Retrieval
Note:
Staff must search by patent number on the USPTO intranet to obtain reexamination file data through OPSG.

The One Patent Service Gateway (OPSG) system is used to support the reexamination process. The sections below delineate OPSG related activities. (A) Reexamination File Data on OPSG — The routine OPSG retrieval transactions are used to obtain data on reexamination files. From the USPTO intranet site, Office staff can click on “Patent Data Portal” and then “General Information” which opens the General Information display. From here, select "search by" patent number and enter the patent number in the box. Then click on “Search” and when the “Patent Number Information” appears, click on “Continuity Data” to obtain the reexamination number.

Jump to MPEP SourceEx Parte ReexaminationExaminer Action Status Tracking
MPEP GuidanceRecommendedAlways
[mpep-2235-63fe29a477567ec772f6fe23]
Search Patent Number to Obtain Reexamination Number
Note:
Click on ‘Search’ and then click on ‘Continuity Data’ in the ‘Patent Number Information’ section to find the reexamination number.

The One Patent Service Gateway (OPSG) system is used to support the reexamination process. The sections below delineate OPSG related activities. (A) Reexamination File Data on OPSG — The routine OPSG retrieval transactions are used to obtain data on reexamination files. From the USPTO intranet site, Office staff can click on “Patent Data Portal” and then “General Information” which opens the General Information display. From here, select "search by" patent number and enter the patent number in the box. Then click on “Search” and when the “Patent Number Information” appears, click on “Continuity Data” to obtain the reexamination number.

Jump to MPEP SourceEx Parte ReexaminationExaminer Action Status Tracking
MPEP GuidanceRecommendedAlways
[mpep-2235-da9ff07963fd12b2ca55791a]
Reexamination Papers Viewable on IFW
Note:
Patent owner and requester information, contents, status, and related Office proceedings for reexamination can be viewed on the Patent Data Portal.

The One Patent Service Gateway (OPSG) system is used to support the reexamination process. The sections below delineate OPSG related activities.

(B) Reexamination e-File —

Jump to MPEP SourceEx Parte ReexaminationExaminer Action Status Tracking
MPEP GuidancePermittedAlways
[mpep-2235-87cf8ba4ea790692a0d1ecfa]
Papers of Reexamination Proceeding Viewable on IFW
Note:
Patent owners and requesters can view the papers of a reexamination proceeding through the Patent Data Portal (IFW).

The One Patent Service Gateway (OPSG) system is used to support the reexamination process. The sections below delineate OPSG related activities.

The papers of a reexamination proceeding may be viewed on IFW.

Jump to MPEP SourceEx Parte ReexaminationExaminer Action Status Tracking
MPEP GuidanceRecommendedAlways
[mpep-2235-6d23654bcbcb4d3626787010]
Patent Data Portal Provides Reexamination Details
Note:
The Patent Data Portal offers information on reexamination proceedings, including details about the patent owner and requester, contents, status, and related Office actions.

The One Patent Service Gateway (OPSG) system is used to support the reexamination process. The sections below delineate OPSG related activities.

Patent Data Portal provides information for the reexamination proceeding as to the patent owner and requester, contents, status, and related Office proceedings (applications, patents and reexamination proceedings).

Jump to MPEP SourceEx Parte ReexaminationExaminer Action Status Tracking
MPEP GuidanceRecommendedAlways
[mpep-2235-5dc278d2648d9cdb0d8bd597]
Data Entry for Reexamination Is Different from Regular Applications
Note:
The data entry requirements for reexamination proceedings are distinct from those of regular patent applications.

The One Patent Service Gateway (OPSG) system is used to support the reexamination process. The sections below delineate OPSG related activities.

Some of the data entry for reexamination is different from that of a regular patent application.

Jump to MPEP SourceEx Parte ReexaminationExaminer Action Status Tracking
MPEP GuidanceRecommendedAlways
[mpep-2235-0db11ebc3ea31c6fdc5c93c7]
Status Codes for Reexaminations Are Generally in the 400 Range
Note:
The rule states that all reexamination proceedings typically have status codes within the '400' range, with some exceptions in the '800' range for certain inter partes documents and actions.

The One Patent Service Gateway (OPSG) system is used to support the reexamination process. The sections below delineate OPSG related activities.

There are also differences in the status codes – all reexamination proceedings generally have status codes in the “400” range (there are some in the “800” range for some inter partes documents and actions).

Jump to MPEP SourceEx Parte ReexaminationExaminer Action Status Tracking
Topic

Central Reexamination Unit Processing

4 rules
MPEP GuidanceRecommendedAlways
[mpep-2235-0d843dd7ea134b8159fd39b3]
Petition Denial Must Be Reported
Note:
The Central Reexamination Unit must report the denial of a petition to the Office monitoring systems via the One Patent Service Gateway (OPSG) system.

The One Patent Service Gateway (OPSG) system is used to support the reexamination process. The sections below delineate OPSG related activities.
(D) Reporting Events to OPSG — The OPSG system is used to monitor major events that take place in processing reexamination proceedings. During initial processing all major pre- ex parte examination events are reported. During the ex parte phase, the mailing of examiner’s actions is reported as well as owner’s responses thereto. The Central Reexamination Unit is responsible for reporting these events to the Office monitoring systems. Examples of the events that may be reported are as follows: Each of these events, as well as additional events reported by the Central Reexamination Unit (CRU) Technical Support Staff (TSS) will be permanently recorded and displayed in the “Contents” portion of the application records. In addition, status representative of these events will also be displayed.

(4) Decision on petition mailed — Denied.

Jump to MPEP SourceCentral Reexamination Unit ProcessingEx Parte ReexaminationExaminer Action Status Tracking
MPEP GuidanceRecommendedAlways
[mpep-2235-fb6523a85976e97dfcaa2596]
Petition Decision Must Be Mailed
Note:
The decision on a petition must be mailed to the appropriate party.

The One Patent Service Gateway (OPSG) system is used to support the reexamination process. The sections below delineate OPSG related activities.
(D) Reporting Events to OPSG — The OPSG system is used to monitor major events that take place in processing reexamination proceedings. During initial processing all major pre- ex parte examination events are reported. During the ex parte phase, the mailing of examiner’s actions is reported as well as owner’s responses thereto. The Central Reexamination Unit is responsible for reporting these events to the Office monitoring systems. Examples of the events that may be reported are as follows: Each of these events, as well as additional events reported by the Central Reexamination Unit (CRU) Technical Support Staff (TSS) will be permanently recorded and displayed in the “Contents” portion of the application records. In addition, status representative of these events will also be displayed.

(5) Decision on petition mailed — Granted.

Jump to MPEP SourceCentral Reexamination Unit ProcessingEx Parte ReexaminationExaminer Action Status Tracking
MPEP GuidancePermittedAlways
[mpep-2235-8e458abf8959f29dab4936dc]
Events Must Be Reported During Ex Parte Reexamination
Note:
All major events during initial and ex parte phases of reexamination proceedings must be reported to the Office monitoring systems by the Central Reexamination Unit.
(D) Reporting Events to OPSG — The OPSG system is used to monitor major events that take place in processing reexamination proceedings. During initial processing all major pre- ex parte examination events are reported. During the ex parte phase, the mailing of examiner’s actions is reported as well as owner’s responses thereto. The Central Reexamination Unit is responsible for reporting these events to the Office monitoring systems. Examples of the events that may be reported are as follows: Each of these events, as well as additional events reported by the Central Reexamination Unit (CRU) Technical Support Staff (TSS) will be permanently recorded and displayed in the “Contents” portion of the application records. In addition, status representative of these events will also be displayed.
  • (1) Determination Mailed — Denial of request for reexamination.
  • (2) Determination Mailed — Grant of request for reexamination.
  • (3) Petition for reconsideration of determination received.
  • (4) Decision on petition mailed — Denied.
  • (5) Decision on petition mailed — Granted.
  • (6) Owner response to determination (owner’s statement) received.
  • (7) Requester response to determination (requester’s reply) received.
  • (8) The mailing of all examiner actions.
  • (9) The receipt of owner’s responses to examiner’s actions and Office receipt date.
Jump to MPEP SourceCentral Reexamination Unit ProcessingEx Parte ReexaminationCertificate of Service
MPEP GuidanceRecommendedAlways
[mpep-2235-702d0711f430112a3f22801b]
Requests Not Assigned by Sixth Week Require Status Report
Note:
If requests have not been assigned to an examiner within six weeks of filing, a status report must be generated to indicate this delay.

The One Patent Service Gateway (OPSG) system is used to support the reexamination process. The sections below delineate OPSG related activities.
(E) Status Reports — Various reports can be generated for the event reporting discussed above. The primary purpose of these reports is to assure that reexaminations are, in fact, processed with “special dispatch.” Reports — A number of automated reports generated from the OPSG system are available on demand for the CRU and other appropriate TCs. These reports serve to indicate to the CRU and other appropriate TCs when certain deadlines are approaching. The following are exemplary data available for review (1) requests which have not been assigned to an examiner by the sixth week since their filing.

Jump to MPEP SourceCentral Reexamination Unit ProcessingEx Parte ReexaminationExaminer Action Status Tracking
Topic

Access to Application Files

3 rules
MPEP GuidanceRecommendedAlways
[mpep-2235-4a1976cce79b1f651beb022c]
Patent Files Must Be Scanned for Reexamination Access
Note:
Patent files not available on IFW must be ordered and scanned into the Image File Wrapper for access during reexamination proceedings.

The One Patent Service Gateway (OPSG) system is used to support the reexamination process. The sections below delineate OPSG related activities.

(C) Patent File Location Control for Patents Not Available on IFW, i.e., Available Only in Paper File —

Jump to MPEP SourceAccess to Application FilesReexamination OrderCertified Copies of Documents
MPEP GuidanceRecommendedAlways
[mpep-2235-829c1e0dee4179bd6c2c1f9d]
Paper Patent Files for Reexamination Requests Must Be Monitored by FOS
Note:
Patent files related to reexamination requests that are in paper form must be ordered and monitored through the File Ordering System (FOS) before being scanned into the Image File Wrapper (IFW).

The One Patent Service Gateway (OPSG) system is used to support the reexamination process. The sections below delineate OPSG related activities.

The movement of paper patent files related to requests for reexamination throughout the Office is monitored by the File Ordering System (FOS).

Jump to MPEP SourceAccess to Application FilesReexamination OrderCertified Copies of Documents
MPEP GuidanceRecommendedAlways
[mpep-2235-8c73261cb357f364f20a8f8a]
Patent File Must Be Scanned for Access During Reexamination
Note:
If the patent file is in paper form, it must be scanned into the Image File Wrapper (IFW) for access throughout the reexamination proceeding.

The One Patent Service Gateway (OPSG) system is used to support the reexamination process. The sections below delineate OPSG related activities.

If the patent file is in paper form, the paper file should be ordered and scanned into the Image File Wrapper (IFW) for access throughout the prosecution of the reexamination proceeding.

Jump to MPEP SourceAccess to Application FilesReexamination OrderCertified Copies of Documents
Topic

Certificate of Service

1 rules
MPEP GuidanceRecommendedAlways
[mpep-2235-5e73e1f7348154c02be5a5d0]
Opsg System For Reexamination Support
Note:
The One Patent Service Gateway system is used to manage and report activities related to reexamination proceedings, including data retrieval, e-filing, paper file management, event reporting, and status tracking.
The One Patent Service Gateway (OPSG) system is used to support the reexamination process. The sections below delineate OPSG related activities.
  • (A) Reexamination File Data on OPSG — The routine OPSG retrieval transactions are used to obtain data on reexamination files. From the USPTO intranet site, Office staff can click on “Patent Data Portal” and then “General Information” which opens the General Information display. From here, select "search by" patent number and enter the patent number in the box. Then click on “Search” and when the “Patent Number Information” appears, click on “Continuity Data” to obtain the reexamination number.
  • (B) Reexamination e-File — The papers of a reexamination proceeding may be viewed on IFW. Patent Data Portal provides information for the reexamination proceeding as to the patent owner and requester, contents, status, and related Office proceedings (applications, patents and reexamination proceedings). Some of the data entry for reexamination is different from that of a regular patent application. There are also differences in the status codes – all reexamination proceedings generally have status codes in the “400” range (there are some in the “800” range for some inter partes documents and actions).
  • (C) Patent File Location Control for Patents Not Available on IFW, i.e., Available Only in Paper File — The movement of paper patent files related to requests for reexamination throughout the Office is monitored by the File Ordering System (FOS). If the patent file is in paper form, the paper file should be ordered and scanned into the Image File Wrapper (IFW) for access throughout the prosecution of the reexamination proceeding.
  • (D) Reporting Events to OPSG — The OPSG system is used to monitor major events that take place in processing reexamination proceedings. During initial processing all major pre- ex parte examination events are reported. During the ex parte phase, the mailing of examiner’s actions is reported as well as owner’s responses thereto. The Central Reexamination Unit is responsible for reporting these events to the Office monitoring systems. Examples of the events that may be reported are as follows: Each of these events, as well as additional events reported by the Central Reexamination Unit (CRU) Technical Support Staff (TSS) will be permanently recorded and displayed in the “Contents” portion of the application records. In addition, status representative of these events will also be displayed.
    • (1) Determination Mailed — Denial of request for reexamination.
    • (2) Determination Mailed — Grant of request for reexamination.
    • (3) Petition for reconsideration of determination received.
    • (4) Decision on petition mailed — Denied.
    • (5) Decision on petition mailed — Granted.
    • (6) Owner response to determination (owner’s statement) received.
    • (7) Requester response to determination (requester’s reply) received.
    • (8) The mailing of all examiner actions.
    • (9) The receipt of owner’s responses to examiner’s actions and Office receipt date.
  • (E) Status Reports — Various reports can be generated for the event reporting discussed above. The primary purpose of these reports is to assure that reexaminations are, in fact, processed with “special dispatch.” Reports — A number of automated reports generated from the OPSG system are available on demand for the CRU and other appropriate TCs. These reports serve to indicate to the CRU and other appropriate TCs when certain deadlines are approaching. The following are exemplary data available for review:
    • (1) requests which have not been assigned to an examiner by the sixth week since their filing.
    • (2) list of proceedings awaiting first action after the mailing of the order granting reexamination including ex parte reexaminations, reexaminations ordered under 35 U.S.C. 257, and inter partes reexaminations.
    • (3) list of reexamination proceedings located in the Central Reexamination Unit (CRU) with action type and date.
    • (4) list of the proceedings that have been forwarded to the Patent Trial and Appeal Board (PTAB).
Jump to MPEP SourceCertificate of ServiceRequest by Patent OwnerThird Party Requester
Topic

Examiner Action Status Tracking

1 rules
MPEP GuidancePermittedAlways
[mpep-2235-7ced077f5f336c81c5b002b8]
General Information Display for Patent Number Search
Note:
Office staff can access the General Information display by clicking on ‘Patent Data Portal’ and then ‘General Information’ from the USPTO intranet site to search for patent numbers.

The One Patent Service Gateway (OPSG) system is used to support the reexamination process. The sections below delineate OPSG related activities. (A) Reexamination File Data on OPSG — The routine OPSG retrieval transactions are used to obtain data on reexamination files. From the USPTO intranet site, Office staff can click on “Patent Data Portal” and then “General Information” which opens the General Information display. From here, select "search by" patent number and enter the patent number in the box. Then click on “Search” and when the “Patent Number Information” appears, click on “Continuity Data” to obtain the reexamination number.

Jump to MPEP SourceExaminer Action Status TrackingEx Parte Reexamination

Citations

Primary topicCitation
Certificate of Service35 U.S.C. § 257

Source Text from USPTO’s MPEP

This is an exact copy of the MPEP from the USPTO. It is here for your reference to see the section in context.

BlueIron Last Updated: 2025-12-31