1802.9 (I) Cancellation of a Basic Registration
If the changes proposed in the application for supplementary registration indicate that the work does not constitute copyrightable subject matter or that the other legal and formal requirements for obtaining a basic registration have not been met, the U.S. Copyright Office may refuse to issue a supplementary registration and may issue a proposal to cancel the basic registration.
Although the Office has the authority to cancel a basic registration if these requirements are not met, it may decline to cancel a basic registration if the application for supplementary registration was submitted by or on behalf of any party other than the claimant named in the basic registration.
For a discussion of the practices and procedures for cancelling a basic registration, see Section 1807.