MPEP § 2224 — Correspondence (Annotated Rules)
§2224 Correspondence
This page consolidates and annotates all enforceable requirements under MPEP § 2224, 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.
Correspondence
This section addresses Correspondence. Primary authority: 35 U.S.C. 302, 37 CFR 1.1(a)(3), and 37 CFR 1.6(d)(5). Contains: 1 requirement, 1 prohibition, 1 guidance statement, 1 permission, and 1 other statement.
Key Rules
Ex Parte Reexamination
A request for ex parte reexamination may not be sent by facsimile transmission (FAX). See 37 CFR 1.6(d)(5). This is also true for a corrected/completed request sent in response to a notice that the original request was not filing date compliant, since the corrected/completed request stands in place of, or is a completion of, the original request papers. All subsequent ex parte reexamination correspondence, however, may be FAXed to:
A request for ex parte reexamination may not be sent by facsimile transmission (FAX). See 37 CFR 1.6(d)(5). This is also true for a corrected/completed request sent in response to a notice that the original request was not filing date compliant, since the corrected/completed request stands in place of, or is a completion of, the original request papers. All subsequent ex parte reexamination correspondence, however, may be FAXed to:
Certificate of Service
All requests for ex parte reexamination filed under 35 U.S.C. 302 (original request papers) and all subsequent ex parte reexamination correspondence mailed to the U.S. Patent and Trademark Office via the U.S. Postal Service Mail, other than correspondence to the Office of the General Counsel pursuant to 37 CFR 1.1(a)(3) and 1.302(e), should be addressed:
Ex Parte Reexamination Request
After the filing of the request for ex parte reexamination, any letters sent to the U.S. Patent and Trademark Office relating to the resulting ex parte reexamination proceeding should identify the proceeding by the number of the patent undergoing reexamination, the reexamination request control number assigned, the art unit, and the name of the examiner.
Certificate of Mailing
The certificate of mailing and transmission procedures (37 CFR 1.8) may be used to file any paper in an ex parte reexamination proceeding, except for a request for reexamination and a corrected/replacement request for reexamination. This includes the filing of a patent owner’s statement under 37 CFR 1.530, and a requester’s reply under 37 CFR 1.535. See MPEP § 512 as to the use of the certificate of mailing and transmission procedures. The Priority Mail Express® mailing procedure (37 CFR 1.10) may be used to file any paper in an ex parte reexamination proceeding. See MPEP § 513 as to the use of the Priority Mail Express® mailing procedure. Again, the filing of a patent owner’s statement under 37 CFR 1.530, and a requester’s reply under 37 CFR 1.535, are included.
Priority Mail Express
The certificate of mailing and transmission procedures (37 CFR 1.8) may be used to file any paper in an ex parte reexamination proceeding, except for a request for reexamination and a corrected/replacement request for reexamination. This includes the filing of a patent owner’s statement under 37 CFR 1.530, and a requester’s reply under 37 CFR 1.535. See MPEP § 512 as to the use of the certificate of mailing and transmission procedures. The Priority Mail Express® mailing procedure (37 CFR 1.10) may be used to file any paper in an ex parte reexamination proceeding. See MPEP § 513 as to the use of the Priority Mail Express® mailing procedure. Again, the filing of a patent owner’s statement under 37 CFR 1.530, and a requester’s reply under 37 CFR 1.535, are included.
Request by Patent Owner
The certificate of mailing and transmission procedures (37 CFR 1.8) may be used to file any paper in an ex parte reexamination proceeding, except for a request for reexamination and a corrected/replacement request for reexamination. This includes the filing of a patent owner’s statement under 37 CFR 1.530, and a requester’s reply under 37 CFR 1.535. See MPEP § 512 as to the use of the certificate of mailing and transmission procedures. The Priority Mail Express® mailing procedure (37 CFR 1.10) may be used to file any paper in an ex parte reexamination proceeding. See MPEP § 513 as to the use of the Priority Mail Express® mailing procedure. Again, the filing of a patent owner’s statement under 37 CFR 1.530, and a requester’s reply under 37 CFR 1.535, are included.
Correspondence Address Requirements
Communications from the U.S. Patent and Trademark Office to the patent owner will be directed to the correspondence address for the patent being reexamined. See 37 CFR 1.33(c).
Correspondence Signature Requirements
Amendments and other papers filed on behalf of patent owners must be signed by the patent owners, or the registered attorney or agent of record in the patent file, or any registered attorney or agent acting in a representative capacity under 37 CFR 1.34(a). See MPEP § 2213.
Inter Partes Reexamination
See MPEP § 2624 for correspondence in inter partes reexamination proceedings.
Citations
| Primary topic | Citation |
|---|---|
| Certificate of Service | 35 U.S.C. § 302 |
| Certificate of Service | 37 CFR § 1.1(a)(3) |
| Certificate of Mailing Priority Mail Express Request by Patent Owner | 37 CFR § 1.10 |
| Correspondence Address Requirements | 37 CFR § 1.33(c) |
| Correspondence Signature Requirements | 37 CFR § 1.34(a) |
| Certificate of Mailing Priority Mail Express Request by Patent Owner | 37 CFR § 1.530 |
| Certificate of Mailing Priority Mail Express Request by Patent Owner | 37 CFR § 1.535 |
| Ex Parte Reexamination | 37 CFR § 1.6(d)(5) |
| Certificate of Mailing Priority Mail Express Request by Patent Owner | 37 CFR § 1.8 |
| Correspondence Signature Requirements | MPEP § 2213 |
| – | MPEP § 2220 |
| – | MPEP § 2267 |
| Inter Partes Reexamination | MPEP § 2624 |
| – | MPEP § 501 |
| Certificate of Mailing Priority Mail Express Request by Patent Owner | MPEP § 512 |
| Certificate of Mailing Priority Mail Express Request by Patent Owner | MPEP § 513 |
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.
Official MPEP § 2224 — Correspondence
Source: USPTO2224 Correspondence [R-01.2024]
All requests for ex parte reexamination filed under 35 U.S.C. 302 (original request papers) and all subsequent ex parte reexamination correspondence mailed to the U.S. Patent and Trademark Office via the U.S. Postal Service Mail, other than correspondence to the Office of the General Counsel pursuant to 37 CFR 1.1(a)(3) and 1.302(e), should be addressed:
Mail Stop Ex Parte
Reexam
Attn: Central Reexamination Unit
Commissioner for Patents
P.O. Box 1450
Alexandria, VA 22313-1450
All such correspondence hand-carried to the Office, or submitted by delivery service (e.g., Federal Express, DHL, etc., which are commercial mail or delivery services) should be addressed to the Customer Service Window (see MPEP § 501, subsection III) with “Mail Stop Ex Parte Reexam” included in the address.
Whether the correspondence is mailed, delivered, or hand-carried to the Office, it is strongly recommended that the Mail Stop information be placed in a prominent position on the first page of each paper being filed utilizing a sufficiently large font size that will direct attention to it.
A request for ex parte reexamination may not be sent by facsimile transmission (FAX). See 37 CFR 1.6(d)(5). This is also true for a corrected/completed request sent in response to a notice that the original request was not filing date compliant, since the corrected/completed request stands in place of, or is a completion of, the original request papers. All subsequent ex parte reexamination correspondence, however, may be FAXed to:
Central Reexamination Unit
(571) 273-9900.
Effective July 9, 2007, the U.S. Patent and Trademark Office began accepting requests for reexamination, and “follow-on” papers (i.e., subsequent correspondence in reexamination proceedings) submitted via the USPTO patent electronic filing system. The Office has updated the Legal Framework for Patent Electronic System to set forth that requests for reexamination, and proper reexamination “follow-on” papers (see MPEP § 2267) are permitted to be submitted using the USPTO patent electronic filing system. The current version of the Legal Framework for Patent Electronic System is at: www.uspto.gov/PatentLegalFramework.
After the filing of the request for ex parte reexamination, any letters sent to the U.S. Patent and Trademark Office relating to the resulting ex parte reexamination proceeding should identify the proceeding by the number of the patent undergoing reexamination, the reexamination request control number assigned, the art unit, and the name of the examiner.
The certificate of mailing and transmission procedures (37 CFR 1.8) may be used to file any paper in an ex parte reexamination proceeding, except for a request for reexamination and a corrected/replacement request for reexamination. This includes the filing of a patent owner’s statement under 37 CFR 1.530, and a requester’s reply under 37 CFR 1.535. See MPEP § 512 as to the use of the certificate of mailing and transmission procedures. The Priority Mail Express® mailing procedure (37 CFR 1.10) may be used to file any paper in an ex parte reexamination proceeding. See MPEP § 513 as to the use of the Priority Mail Express® mailing procedure. Again, the filing of a patent owner’s statement under 37 CFR 1.530, and a requester’s reply under 37 CFR 1.535, are included.
Communications from the U.S. Patent and Trademark Office to the patent owner will be directed to the correspondence address for the patent being reexamined. See 37 CFR 1.33(c).
Amendments and other papers filed on behalf of patent owners must be signed by the patent owners, or the registered attorney or agent of record in the patent file, or any registered attorney or agent acting in a representative capacity under 37 CFR 1.34(a). See MPEP § 2213.
Double correspondence with the patent owners and the attorney or agent normally will not be undertaken by the Office.
Where no correspondence address is otherwise specified, correspondence will be with the most recent attorney or agent made of record by the patent owner.
Note MPEP § 2220 on certificate of service.
See MPEP § 2624 for correspondence in inter partes reexamination proceedings.