2205.2 (F) Copyright Owner Identified by Reference
A notice that identifies the copyright owner by reference, such as “copyright by author” or “copyright by publisher,” is acceptable if the copies or phonorecords contain a name, abbreviation, or a generally known designation that identifies the copyright owner as the author, the publisher, or another person or legal entity.
If the copies or phonorecords do not contain the name, an abbreviation of the name, or generally known designation that identifies the copyright owner, the U.S. Copyright Office considers the work to be published without notice. 17 U.S.C. § 406 (C).