37 C.F.R. § 2.21 Requirements for receiving a filing date.
Title 37 - Patents, Trademarks, and Copyrights
(a) The Office will grant a filing date to an application under section 1 or section 44 of the Act that contains all of the following: (1) The name of the applicant; (2) A name and address for correspondence; (3) A clear drawing of the mark; (4) A listing of the goods or services; and (5) The filing fee for at least one class of goods or services, required by §2.6. (b) If the applicant does not submit all the elements required in paragraph (a) of this section, the Office may return the papers with an explanation of why the filing date was denied. (c) The applicant may correct and resubmit the application papers. If the resubmitted papers and fee meet all the requirements of paragraph (a) of this section, the Office will grant a filing date as of the date the Office receives the corrected papers. [64 FR 48918, Sept. 8, 1999, as amended at 68 FR 55762, Sept. 26, 2003]
Title 37: Patents, Trademarks, and Copyrights
PART 2—RULES OF PRACTICE IN TRADEMARK CASES
Application for Registration
§ 2.21 Requirements for receiving a filing date.