19 C.F.R. § 133.36
If there is a change in the name of the owner of a recorded copyright, but no transfer of ownership, written notice specifying the change shall be given to the IPR & Restricted Merchandise Branch accompanied by the following:
[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]