Code of Federal Regulations Title 37. Patents, Trademarks, and Copyrights § 37.2.181 Term of original registrations and renewals

(a)(1) Subject to the provisions of section 8 of the Act requiring an affidavit or declaration of continued use or excusable nonuse, registrations issued or renewed prior to November 16, 1989, whether on the Principal Register or on the Supplemental Register, remain in force for twenty years from their date of issue or the date of renewal, and may be further renewed for periods of ten years, unless previously cancelled or surrendered.

(2) Subject to the provisions of section 8 of the Act requiring an affidavit or declaration of continued use or excusable nonuse, registrations issued or renewed on or after November 16, 1989, whether on the Principal Register or on the Supplemental Register, remain in force for ten years from their date of issue or the date of renewal, and may be further renewed for periods of ten years, unless previously cancelled or surrendered.