USPTO Final Rule Imposes Mandatory U.S. Counsel Requirement for Foreign Patent Applicants
Highlights
- The United States Patent and Trademark Office (USPTO) is expected to publish a Final Rule that will require patent applicants with at least one non-U.S.-domiciled applicant to be represented by a USPTO-registered patent practitioner for all submissions.
- The requirement will apply to all new applications filed after the effective date and to any papers submitted in pending applications — submissions not signed by a registered U.S. practitioner will not be entered into the record.
- The Final Rule will apply based upon the domicile of the applicants listed on the Application Disclosure Sheet (ADS).
- While applications may still receive a filing date without practitioner representation, key components (e.g., priority claims, small or micro-entity status designations) will not be accepted until a registered U.S. practitioner is appointed.
- Applicants outside the U.S. should plan to engage a registered U.S. patent practitioner promptly to avoid delays, ensure compliance, and preserve rights under the new rule.
The USPTO is expected to publish a Final Rule on March 20, 2026 that will, once effective (approximately 120 days after the date of publication), require patent applicants with at least one non-U.S.-domiciled applicant to be represented by a patent practitioner that is registered before the USPTO. The Final Rule will apply to all new applications filed on or after the effective date as well as all papers that are submitted for all pending applications on or after the effective date. Before the implementation of this rule, the USPTO’s rules had never required inventor/applicants to be represented by a registered U.S. patent practitioner, although existing rules have required all juristic entities to be represented by a registered U.S. patent practitioner.
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