MPEP § 2666 — Patent Owner Response to Office Action (Annotated Rules)

§2666 Patent Owner Response to Office Action

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

This page consolidates and annotates all enforceable requirements under MPEP § 2666, 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.

Patent Owner Response to Office Action

This section addresses Patent Owner Response to Office Action.

Key Rules

Topic

AIA Effective Dates

1 rules
StatutoryInformativeAlways
[mpep-2666-097f2de98fd226f36e30185b]
Inter Partes Reexamination Not Acceptable After September 16, 2012
Note:
The Office no longer accepts requests for inter partes reexamination filed on or after the specified date.

The Office does not accept requests for inter partes reexamination filed on or after September 16, 2012. See 37 CFR 1.913(b). Guidance on the former practice is available in revision 07.2022 of the 9 th Edition of the MPEP.

Jump to MPEP Source · 37 CFR 1.913(b)AIA Effective DatesAIA Overview and Effective DatesAIA vs Pre-AIA Practice
Topic

Office Actions in Reexamination

1 rules
StatutoryInformativeAlways
[mpep-2666-1c16962f83b54bbe74d460ad]
No Requests After September 16, 2012
Note:
The Office no longer accepts inter partes reexamination requests filed after the specified date. Guidance on previous practices is available in a specific MPEP revision.

The Office does not accept requests for inter partes reexamination filed on or after September 16, 2012. See 37 CFR 1.913(b). Guidance on the former practice is available in revision 07.2022 of the 9 th Edition of the MPEP.

Jump to MPEP Source · 37 CFR 1.913(b)Office Actions in ReexaminationResponses and AmendmentsInter Partes Reexamination Procedure

Citations

Primary topicCitation
AIA Effective Dates
Office Actions in Reexamination
37 CFR § 1.913(b)

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