Can foreign-domiciled applicants or registrants make submissions to the USPTO without an attorney?

Generally, no. Trademark rule requires domicile address for all filers and also requires foreign-domiciled applicants and registrants to have a U.S.-licensed attorney. If you are foreign-domiciled, you are required to use a US trademark attorney to file your trademark-related submissions with the USPTO. A foreign-domiciled trademark applicant, registrant, or party is one who does not have a domicile in the United States or its territories.  An individual’s domicile is the place the person resides and intends to be the person’s principal home. An entity’s domicile is its principal place of business (headquarters) where the entity’s senior executives or officers ordinarily direct and control the entity’s activities. Foreign-domiciled trademark applicants, registrants, and parties to Trademark Trial and Appeal Board proceedings, including Canadian trademark filers, must appoint and be represented before the United States Patent and Trademark Office (USPTO) by a US trademark attorney.