405.1 Joint Works
The U.S. Copyright Office will accept an application filed by or on behalf of one or more authors of a joint work if the application is otherwise proper and complete. The application must identify all of the authors of the joint work.
If a joint author transferred all of his or her rights to a third party, either the joint author or the transferee may be named as a copyright claimant, and the application may be filed by the joint author, the transferee, or their respective agents. If a joint owner transferred only some of his or her rights to a third party, the joint author must be named as the copyright claimant, although the application to register the copyright in the joint author’s name may be filed by the transferee or any of the other parties listed in Section 402.