The United States Patent and Trademark Office (USPTO) rule requiring that non-U.S. domiciled trademark applicants and registrants must be represented by an attorney who is licensed to practice law in the United States has taken effect as of August 3rd, 2019.
Non-compliant applications and registrations and U.S. extensions of International Registrations (under the Madrid Protocol) that are not in condition for publication should face Office Actions requiring the appointment of a qualified U.S. attorney to avoid abandonment or cancellation.
For more information regarding this rule, please visit the USPTO