USPTO issues final rule requiring foreign applicants and patent owners to be represented by a registered patent practitioner

Published on: 03/19/2026 8:55 AM

Patent Alert

USPTO to require foreign applicants and patent owners to be represented by a registered patent practitioner

The USPTO is issuing a final rule to amend the Rules of Practice in patent cases to require patent applicants and patent owners whose domicile is not located within the United States or its territories (foreign applicants/inventors and patent owners) to be represented by a practitioner registered to practice and in good standing before the Office.

The requirement will bring the United States in line with most other countries, which require that such parties be represented by a licensed or registered person of that country. Additionally, the requirement will increase efficiency and enable the USPTO to more effectively enforce compliance by all foreign applicants/inventors and patent owners with U.S. statutory and regulatory requirements in patent matters, as well as enhance the USPTO’s ability to respond to false certifications, misrepresentations, and fraud.

Today, the final rule is available for public viewing in the Federal Register Reading Room, and on Friday, March 20, it will publish in the Federal Register as well as be available on the Patent Related Notices webpage.

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