19 C.F.R. § 133.6 Change in name of owner of recorded trademark.
Title 19 - Customs Duties
If there is a change in the name of the owner of a recorded trademark, but no change in ownership, written notice thereof shall be given to the Intellectual Property Rights Branch, accompanied by: (a) A status copy of the certificate of registration certified by the U.S. Patent and Trademark Office showing title to be presently in the name as changed; and (b) A fee of $80, which covers all trademarks included in the application which have been previously recorded with the United States Customs Service. A check or money order shall be made payable to the United States Customs Service. [T.D. 72–266, 37 FR 20678, Oct. 3, 1972, as amended by T.D. 75–160, 40 FR 28791, July 9, 1975; T.D. 91–77, 56 FR 46115, Sept. 10, 1991]
Title 19: Customs Duties
PART 133—TRADEMARKS, TRADE NAMES, AND COPYRIGHTS
Subpart A—Recordation of Trademarks
§ 133.6 Change in name of owner of recorded trademark.

