MPEP § 601.03 — Correspondence Address (Annotated Rules)

§601.03 Correspondence Address

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

This page consolidates and annotates all enforceable requirements under MPEP § 601.03, 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 Address

This section addresses Correspondence Address. Primary authority: 37 CFR 11.11) and 37 CFR 11.11. Contains: 3 requirements, 1 guidance statement, 2 permissions, and 1 other statement.

Key Rules

Topic

Correspondence Address Requirements

6 rules
StatutoryRequiredAlways
[mpep-601-03-0ea141fe60c4792112d9d349]
Separate Notification Required for Each Application
Note:
A separate notification must be filed in each application where a person is intended to receive communications from the Office, unless the correspondence address is designated as the Customer Number.

Note that the obligation (see 37 CFR 11.11) of a registered attorney or agent to notify the Director of the Office of Enrollment and Discipline of any change of his or her address is separate from the obligation to file a notice of change of address in individual applications. Unless the correspondence address is designated as the address associated with a Customer Number, a separate notification must be filed in each application for which a person is intended to receive communications from the Office. See MPEP § 403 for Customer Number Practice. In those instances where a change in the correspondence address of a registered attorney or agent is necessary in a plurality of applications, the notification filed in each application may be a reproduction of a properly executed, original notification. The original notice may either be sent to the Office of Enrollment and Discipline as notification of the change of address (37 CFR 11.11), or may be retained by applicant.

Jump to MPEP Source · 37 CFR 11.11)Correspondence Address RequirementsCustomer Number PracticeCorrespondence with the Office
StatutoryPermittedAlways
[mpep-601-03-cfc7e0c9db503efee0c24792]
Notification for Multiple Applications
Note:
A single properly executed notification can be reproduced and filed in multiple applications when a registered attorney's address changes.

Note that the obligation (see 37 CFR 11.11) of a registered attorney or agent to notify the Director of the Office of Enrollment and Discipline of any change of his or her address is separate from the obligation to file a notice of change of address in individual applications. Unless the correspondence address is designated as the address associated with a Customer Number, a separate notification must be filed in each application for which a person is intended to receive communications from the Office. See MPEP § 403 for Customer Number Practice. In those instances where a change in the correspondence address of a registered attorney or agent is necessary in a plurality of applications, the notification filed in each application may be a reproduction of a properly executed, original notification. The original notice may either be sent to the Office of Enrollment and Discipline as notification of the change of address (37 CFR 11.11), or may be retained by applicant.

Jump to MPEP Source · 37 CFR 11.11)Correspondence Address RequirementsCorrespondence with the OfficeCorrespondence Address
MPEP GuidanceRequiredAlways
[mpep-601-03-60deac136a5f4848f7fc6f76]
Application Must Specify Correspondence Address
Note:
An application must provide a correspondence address for Office communications, and changes must be promptly notified.

An application must specify a correspondence address to which the Office will send notices, letters, and other communications relating to an application. The Office should be promptly notified of any change in correspondence address. The required notification of change of correspondence address need take no particular form. However, it should be provided in a manner calling attention to the fact that a change of address is being made. Thus, the mere inclusion, in a paper being filed for another purpose, of an address which is different from the previously provided correspondence address, without mention of the fact that an address change is being made would not ordinarily be recognized or deemed as instructions to change the correspondence address on the file record.

Jump to MPEP SourceCorrespondence Address RequirementsCorrespondence with the OfficeCorrespondence Address
MPEP GuidanceRecommendedAlways
[mpep-601-03-984d76912e500f2b43249587]
Notification of Address Change Required
Note:
The Office must be promptly informed of any change in the correspondence address.

An application must specify a correspondence address to which the Office will send notices, letters, and other communications relating to an application. The Office should be promptly notified of any change in correspondence address. The required notification of change of correspondence address need take no particular form. However, it should be provided in a manner calling attention to the fact that a change of address is being made. Thus, the mere inclusion, in a paper being filed for another purpose, of an address which is different from the previously provided correspondence address, without mention of the fact that an address change is being made would not ordinarily be recognized or deemed as instructions to change the correspondence address on the file record.

Jump to MPEP SourceCorrespondence Address RequirementsCorrespondence with the OfficeCorrespondence Address
MPEP GuidanceRequiredAlways
[mpep-601-03-5cb9b18ddb1cf879d32056fb]
Notification for Address Change Required
Note:
An application must notify the Office of any change in correspondence address, which should be clearly stated and not implied by merely changing the address on a filed document.

An application must specify a correspondence address to which the Office will send notices, letters, and other communications relating to an application. The Office should be promptly notified of any change in correspondence address. The required notification of change of correspondence address need take no particular form. However, it should be provided in a manner calling attention to the fact that a change of address is being made. Thus, the mere inclusion, in a paper being filed for another purpose, of an address which is different from the previously provided correspondence address, without mention of the fact that an address change is being made would not ordinarily be recognized or deemed as instructions to change the correspondence address on the file record.

Jump to MPEP SourceCorrespondence Address RequirementsCorrespondence with the OfficeCorrespondence Address
MPEP GuidanceInformativeAlways
[mpep-601-03-a6bcc15c6e09192e67bb89a2]
Petition to Revive Due to Incorrect Address
Note:
This rule outlines the process for filing a petition to revive an abandoned application when an Office action was not timely received due to an incorrect correspondence address.

See MPEP § 711.03(c) for treatment of petitions to revive applications abandoned as a consequence of failure to timely receive an Office action at the correspondence address of record (e.g., because the Office action was mailed to the incorrect correspondence address).

Jump to MPEP SourceCorrespondence Address RequirementsCorrespondence with the OfficeCorrespondence Address
Topic

Practitioner Discipline

2 rules
StatutoryInformativeAlways
[mpep-601-03-5ad693fe2ff918127995e86d]
Registered Attorney Must Notify Office of Address Change Separately From Application
Note:
A registered attorney or agent must notify the Director of the Office of Enrollment and Discipline of any address change separately from filing a notice of change in individual applications.

Note that the obligation (see 37 CFR 11.11) of a registered attorney or agent to notify the Director of the Office of Enrollment and Discipline of any change of his or her address is separate from the obligation to file a notice of change of address in individual applications. Unless the correspondence address is designated as the address associated with a Customer Number, a separate notification must be filed in each application for which a person is intended to receive communications from the Office. See MPEP § 403 for Customer Number Practice. In those instances where a change in the correspondence address of a registered attorney or agent is necessary in a plurality of applications, the notification filed in each application may be a reproduction of a properly executed, original notification. The original notice may either be sent to the Office of Enrollment and Discipline as notification of the change of address (37 CFR 11.11), or may be retained by applicant.

Jump to MPEP Source · 37 CFR 11.11)Practitioner DisciplinePractitioner Recognition and ConductCorrespondence Address Requirements
StatutoryPermittedAlways
[mpep-601-03-d4ce1e1619e8817ce3c03b1d]
Notification of Change of Address May Be Retained by Applicant
Note:
Applicants may choose to retain the notice of change of address instead of sending it to the Office of Enrollment and Discipline.

Note that the obligation (see 37 CFR 11.11) of a registered attorney or agent to notify the Director of the Office of Enrollment and Discipline of any change of his or her address is separate from the obligation to file a notice of change of address in individual applications. Unless the correspondence address is designated as the address associated with a Customer Number, a separate notification must be filed in each application for which a person is intended to receive communications from the Office. See MPEP § 403 for Customer Number Practice. In those instances where a change in the correspondence address of a registered attorney or agent is necessary in a plurality of applications, the notification filed in each application may be a reproduction of a properly executed, original notification. The original notice may either be sent to the Office of Enrollment and Discipline as notification of the change of address (37 CFR 11.11), or may be retained by applicant.

Jump to MPEP Source · 37 CFR 11.11)Practitioner DisciplineCorrespondence Address RequirementsCustomer Number Practice
Topic

AIA Effective Dates

1 rules
MPEP GuidanceInformativeAlways
[mpep-601-03-ff26e9bb8054b65d57d47283]
Requirement for Correspondence Address Changes
Note:
Describes how to change the correspondence address for applications filed before and after September 16, 2012.

See MPEP § 601.03(a) for information specific to correspondence address changes in an application filed on or after September 16, 2012. See MPEP § 601.03(b) for information specific to correspondence address changes in an application filed before September 16, 2012.

Jump to MPEP SourceAIA Effective DatesAIA Overview and Effective DatesCorrespondence Address Requirements

Citations

Primary topicCitation
Correspondence Address Requirements
Practitioner Discipline
37 CFR § 11.11
Correspondence Address Requirements
Practitioner Discipline
MPEP § 403
AIA Effective DatesMPEP § 601.03(a)
AIA Effective DatesMPEP § 601.03(b)
Correspondence Address RequirementsMPEP § 711.03(c)

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