MPEP § 2222 — Address of Patent Owner (Annotated Rules)

§2222 Address of Patent Owner

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

This page consolidates and annotates all enforceable requirements under MPEP § 2222, 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.

Address of Patent Owner

This section addresses Address of Patent Owner. Primary authority: 37 CFR 1.33(c), 37 CFR 1.33, and 37 CFR 11.104. Contains: 1 requirement, 2 guidance statements, 1 permission, and 4 other statements.

Key Rules

Topic

Correspondence Address Requirements

6 rules
StatutoryInformativeAlways
[mpep-2222-90abd92814cd70e6441db261]
Correct Correspondence Address for Patent Owners
Note:
The correct address for all notices, official letters, and other communications for patent owners in reexamination proceedings must be provided.

Address of Patent Owner: The correspondence address for the patent to be reexamined, or being reexamined is the correct address for all notices, official letters, and other communications for patent owners in reexamination proceedings. See 37 CFR 1.33(c).

Jump to MPEP Source · 37 CFR 1.33(c)Correspondence Address RequirementsCorrespondence with the OfficeCorrespondence Address
StatutoryInformativeAlways
[mpep-2222-e2b67e5a908102e641b4ef35]
Correct Address for Patent Reexamination Communications
Note:
The correspondence address for a reexamined patent is the correct address for all official communications to the patent owner.

Address of Patent Owner: The correspondence address for the patent to be reexamined, or being reexamined is the correct address for all notices, official letters, and other communications for patent owners in reexamination proceedings. See 37 CFR 1.33(c).

Jump to MPEP Source · 37 CFR 1.33(c)Correspondence Address RequirementsCorrespondence with the OfficeCorrespondence Address
StatutoryInformativeAlways
[mpep-2222-ddfd83cc2f24f156fa1287ef]
Practitioner Must Notify Former Client of Office Correspondence
Note:
A practitioner must inform a former client about significant Office correspondence, even after the attorney-client relationship ends.

Representative of Patent Owner: As a general rule, the attorney-client relationship terminates when the purpose for which the attorney was employed is accomplished; e.g., the issuance of a patent to the client. However, under 37 CFR 11.104, as under former 37 CFR 10.23(c)(8), a practitioner should not fail to timely and adequately inform a client or former client of correspondence received from the Office when the correspondence: (i) could have a significant effect on a matter pending before the Office, (ii) is received by the practitioner on behalf of a client or former client, and (iii) is correspondence of which a reasonable practitioner would believe under the circumstances the client or former client should be notified. This responsibility of a practitioner to a former client is not eliminated by withdrawing as an attorney or agent of record. See also 37 CFR 1.116(d). The practitioner, if desired, can minimize the need for forwarding correspondence concerning issued patents by having the correspondence address changed after the patent issues if the correspondence address is the practitioner’s address, which frequently is the case where the practitioner is the attorney or agent of record.

Jump to MPEP Source · 37 CFR 11.104Correspondence Address RequirementsCorrespondence AddressCorrespondence with the Office
StatutoryInformativeAlways
[mpep-2222-e75089814430b5d4fb2bee21]
Practitioner Must Notify Former Client of Office Correspondence
Note:
A practitioner must inform a former client about important Office correspondence, even after withdrawing as an attorney or agent of record.

Representative of Patent Owner: As a general rule, the attorney-client relationship terminates when the purpose for which the attorney was employed is accomplished; e.g., the issuance of a patent to the client. However, under 37 CFR 11.104, as under former 37 CFR 10.23(c)(8), a practitioner should not fail to timely and adequately inform a client or former client of correspondence received from the Office when the correspondence: (i) could have a significant effect on a matter pending before the Office, (ii) is received by the practitioner on behalf of a client or former client, and (iii) is correspondence of which a reasonable practitioner would believe under the circumstances the client or former client should be notified. This responsibility of a practitioner to a former client is not eliminated by withdrawing as an attorney or agent of record. See also 37 CFR 1.116(d). The practitioner, if desired, can minimize the need for forwarding correspondence concerning issued patents by having the correspondence address changed after the patent issues if the correspondence address is the practitioner’s address, which frequently is the case where the practitioner is the attorney or agent of record.

Jump to MPEP Source · 37 CFR 11.104Correspondence Address RequirementsCorrespondence AddressCorrespondence with the Office
StatutoryPermittedAlways
[mpep-2222-55d30c714944514d57faa551]
Change Correspondence Address After Patent Issues
Note:
A practitioner can change the correspondence address after a patent issues to minimize forwarding of post-issuance correspondence.

Representative of Patent Owner: As a general rule, the attorney-client relationship terminates when the purpose for which the attorney was employed is accomplished; e.g., the issuance of a patent to the client. However, under 37 CFR 11.104, as under former 37 CFR 10.23(c)(8), a practitioner should not fail to timely and adequately inform a client or former client of correspondence received from the Office when the correspondence: (i) could have a significant effect on a matter pending before the Office, (ii) is received by the practitioner on behalf of a client or former client, and (iii) is correspondence of which a reasonable practitioner would believe under the circumstances the client or former client should be notified. This responsibility of a practitioner to a former client is not eliminated by withdrawing as an attorney or agent of record. See also 37 CFR 1.116(d). The practitioner, if desired, can minimize the need for forwarding correspondence concerning issued patents by having the correspondence address changed after the patent issues if the correspondence address is the practitioner’s address, which frequently is the case where the practitioner is the attorney or agent of record.

Jump to MPEP Source · 37 CFR 11.104Correspondence Address RequirementsCorrespondence with the OfficeCorrespondence Address
StatutoryRecommendedAlways
[mpep-2222-f1bec43aa6a6e2ff9fe627ad]
Change Correspondence Address Requirement
Note:
Patent owners must follow specific procedures to change their correspondence address in the patent record.

Submissions to the Office to change the correspondence address or power of attorney in the record of the patent should be addressed as follows:

Jump to MPEP Source · 37 CFR 1.33Correspondence Address RequirementsCorrespondence with the OfficeCorrespondence Address
Topic

Correspondence with the Office

1 rules
StatutoryRecommendedAlways
[mpep-2222-14c50ae98de043f87cb0b356]
Practitioner Must Notify Former Client of Significant Office Correspondence
Note:
A practitioner must timely and adequately inform a former client about significant Office correspondence that affects their patent matter.

Representative of Patent Owner: As a general rule, the attorney-client relationship terminates when the purpose for which the attorney was employed is accomplished; e.g., the issuance of a patent to the client. However, under 37 CFR 11.104, as under former 37 CFR 10.23(c)(8), a practitioner should not fail to timely and adequately inform a client or former client of correspondence received from the Office when the correspondence: (i) could have a significant effect on a matter pending before the Office, (ii) is received by the practitioner on behalf of a client or former client, and (iii) is correspondence of which a reasonable practitioner would believe under the circumstances the client or former client should be notified. This responsibility of a practitioner to a former client is not eliminated by withdrawing as an attorney or agent of record. See also 37 CFR 1.116(d). The practitioner, if desired, can minimize the need for forwarding correspondence concerning issued patents by having the correspondence address changed after the patent issues if the correspondence address is the practitioner’s address, which frequently is the case where the practitioner is the attorney or agent of record.

Jump to MPEP Source · 37 CFR 11.104Correspondence with the OfficeCorrespondence Address RequirementsCorrespondence Address
Topic

Power of Attorney by Assignee

1 rules
StatutoryRequiredAlways
[mpep-2222-4e7748722789cb9cba3ec20b]
New Power of Attorney Required for Different Correspondent
Note:
If the patent owner wants a different attorney or agent to receive correspondence, they must file a new power of attorney.

If the patent owner desires that a different attorney or agent receive correspondence, then a new power of attorney must be filed. See MPEP §§ 324 or 325 for establishing an assignee’s right to take action when submitting a power of attorney.

Jump to MPEP Source · 37 CFR 1.33Power of Attorney by AssigneePower of AttorneyCorrespondence Address Requirements

Citations

Primary topicCitation
Correspondence Address Requirements
Correspondence with the Office
37 CFR § 1.116(d)
Correspondence Address Requirements37 CFR § 1.33(c)
Correspondence Address Requirements
Correspondence with the Office
37 CFR § 10.23(c)(8)
Correspondence Address Requirements
Correspondence with the Office
37 CFR § 11.104
Power of Attorney by AssigneeMPEP § 324

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