USPTO Pending MPEP Update: Required Use by Foreign Applicants and Patent Owners of a Patent Practitioner

Required Use by Foreign Applicants and Patent Owners of a Patent Practitioner

BlueIron has reviewed this USPTO publication and cross-referenced the affected BlueIron pages below.

USPTO Source

Final rule | 2026-03-20 | Effective 2026-07-20 | 91 FR 13510
USPTO source

MPEP Incorporation Status

USPTO MPEP version: Ninth Edition, Revision 01.2024 (current through 2024-01-31)
BlueIron's Update: 2026-09-26
Mapping basis: USPTO subsequent-publications index and linked source document reviewed by BlueIron

Affected BlueIron Pages

MPEP Sections

• 402

U.S.C. Sections

None identified.

C.F.R. Sections

• 37 C.F.R. 1.31
• 37 C.F.R. 1.33

Source Review

The USPTO source was reviewed for this pass. No USPTO-stated replacement text for a specific MPEP section was extracted into this article; the affected BlueIron pages above are the current cross-reference targets.

Notes

Source review: the final rule requires foreign applicants and patent owners to use a patent practitioner. BlueIron cross-references MPEP 402 and 37 CFR 1.31 and 1.33.

This BlueIron page records the pending USPTO update and cross-references affected BlueIron MPEP, U.S.C., and C.F.R. pages. Official MPEP text remains unchanged until USPTO incorporates the update.