15 U.S.C. § 1141a (Lanham Act § 61)—International applications based on United States applications or registrations

(a) In general

The owner of a basic application pending before the United States Patent and Trademark Office, or the owner of a basic registration granted by the United States Patent and Trademark Office may file an international application by submitting to the United States Patent and Trademark Office a written application in such form, together with such fees, as may be prescribed by the Director.

(b) Qualified owners

A qualified owner, under subsection (a) of this section, shall—

(1) be a national of the United States;

(2) be domiciled in the United States; or

(3) have a real and effective industrial or commercial establishment in the United States.