2113 Not Known if Work (or Larger Work) Was Registered for Original Term
Generally, a Form RE/Addendum is appropriate only when a work (or the larger work) was not registered for the original term. If it is not known whether the work was
registered for the original term, a search of the U.S. Copyright Office’s registration records should be conducted before the renewal claim is filed. When a renewal claim is filed prior to a search being done, the Office may advise the applicant to conduct a search before proceeding with registration. For information about investigating the copyright status of a work, see How to Investigate the Copyright Status of a Work (Circular 22), and The Copyright Card Catalog and the Online Files of the Copyright Office (Circular 23). For more information about the administrative classifications for pre-1978 registration records, see U.S. COPYRIGHT OFFICE, ADMINISTRATIVE CLASSIFICATIONS: 1870-1978.