A work of authorship that is not protected by copyright is in the public domain. In the United States, a copyrighted work enters the public domain when its full copyright term has expired. In addition, works published in the United States without a copyright notice on or before March 1, 1989 may be in the public domain, and works registered or published in the United States on or before December 31, 1963 may be in the public domain if the copyright was not renewed in a timely manner. The status of a creative work which, through expiration of term or failure to comply with statutory formalities, is not protected by copyright.