515 RD

Determining the copyright status of '515 RD' is difficult due to its nature as an underground short film and the lack of primary copyright records. Released around 1970 and often associated with experimental or adult-oriented underground cinema of that era, the work falls into the 1964–1977 'automatic renewal' window. Under the law of the time, protection in the U.S. was contingent upon publication with a valid copyright notice. Research in the U. Penn online Catalog of Copyright Entries and the Stanford Renewal Database yields no registration for a film of this title. While many commercial films of this era are protected via automatic renewal or current commercial exploitation (like Criterion or Shout Factory releases), '515 RD' lacks a clear chain of title or evidence of a formal copyright notice on the original prints. Because the US Copyright Office online database (covering 1978 onward) does not list a registration and there is no evidence of a 'cure' for a missing notice, the status is technically uncertain. Frequently, such underground films entered the public domain immediately upon release due to the omission of a formal copyright notice, but without physical inspection of a contemporary print or a library record confirming the lack of notice, a definitive 'public domain' ruling cannot be made.