The U.S. Patent and Trademark Office has reminded applicants that, from July 20, 2026, any patent matter involving at least one applicant or patent owner domiciled outside the United States and its territories will generally need to be handled by a registered U.S. patent practitioner in good standing. The requirement covers utility, plant and design patent matters and applies to filings received on or after that date, including amendments, responses, information disclosure statements, petitions and most other correspondence. Pending applications filed before July 20 are not exempt from the new rule for later submissions.
The practical task is not to refile existing cases, but to identify every foreign-owned matter with a deadline or planned submission after the effective date and put representation, authority and signature arrangements in place now. A limited number of documents must still be signed by specified parties themselves, and the absence of a practitioner’s signature will not necessarily prevent a new application from receiving a filing date, but defective papers may require correction or may not be entered. Leaving the appointment until the last moment risks turning a manageable procedural change into missed deadlines, extra cost and avoidable uncertainty.
