CFR›Title 16›Chapter I›Part 1›16 CFR Part 1 Subpart F Citation16 CFR Part 1 Subpart FContainsSection § 1.51CorpusDaily eCFRDisplayed edition2026-10-23Last updated2026-10-23 Subpart F—Trademark Cancellation Procedure Sections § 1.51 § 1.51 Applications. Authority15 U.S.C. 46; 15 U.S.C. 57a; 5 U.S.C. 552; 5 U.S.C. 601 note.Source32 FR 8444, June 13, 1967, unless otherwise noted. Previous E Subpart E—Export Trade Associations Next G Subpart G—Injunctive and Condemnation Proceedings