CFR /  Title 37  /  Part 2  /  Sec. 2.194 Identification of trademark application or registration.

(a) No correspondence relating to a trademark application should be filed prior to receipt of the application serial number.

(b) (1) A letter about a trademark application should identify the serial number, the name of the applicant, and the mark.

(1) A letter about a trademark application should identify the serial number, the name of the applicant, and the mark.

(2) A letter about a registered trademark should identify the registration number, the name of the registrant, and the mark.