Is Attack of the Giant Leeches (1959) public domain?
The copyright record for this film, written out in full so you can check it.
Public domain in the United States
What is usually said
Corman-produced swamp horror, freely posted and rarely checked.
The finding, and the working behind it
Public domain in the United States: no renewal exists. The renewal class returns two records on "leeches" and neither is this film.
Two renewal registrations contain "leeches" in the motion picture class. The count is exact, both were read, and neither is this film.
This one deserves its caveat read rather than skipped. It was released by American International, and Selma Enterprises renewed a run of American International titles in 1985 and 1986 — I Was a Teenage Werewolf, Teenage Cave Man, The Brain Eaters and The Amazing Colossal Man among them. The sweep was title by title and it did not take this one, but "it is an AIP picture" is a reason to check rather than a reason to relax.
The register, as it stands
- Original release
- 1959, American International Pictures
- Renewal fell due
- 1986 or 1987, the twenty-eighth year
- Renewal found
- none
- Search
- "leeches", renewal class, motion pictures — 2 records, both read
- Checked
- 7 September 2026
- Searched
- 2026-09-07
The company it keeps
American International titles are the single most renewed group in this research. Four of them are recorded on this site as NOT public domain, all four renewed by Selma Enterprises in the mid-1980s. This film is clear on its own record; its neighbours are not.
The search covers the film. Music and any underlying story were not searched.
How to check this yourself
Everything above is drawn from public records. None of it requires our word:
- The Catalog of Copyright Entries, the Copyright Office’s printed registration and renewal volumes, scanned and searchable at the Internet Archive and at the Online Books Page. Registration numbers beginning LP or MP are film entries.
- The Copyright Office online records at copyright.gov, which are complete from 1978 and therefore decisive for any renewal that fell due from then on.
- The NFPF Field Guide to Sponsored Films, for the industrial and educational titles, which records copyright status entry by entry.
Where these numbers came from
- Copyright Office public records API, renewal class, motion pictures, query "leeches".
- Method: outreach/PD-VERIFICATION.md; verifier: scripts/pd-verify.ts.
What this does and does not mean
This is a finding about United States copyright, made in good faith from the public record. Copyright terms differ by country, and a film in the public domain here may still be protected elsewhere.
A negative search proves that no record was found, which is not identical to proving that no record exists. The Copyright Office says as much about its own catalogs. Where a search could not be decisive we say so above rather than rounding it up to certainty.
This is a record of research and not legal advice. If you hold a right in this film, or you think we have read the record wrong, write to mike@tapeterritory.com with what we missed and we will correct it here.
Why we did this research
Establishing what may be published is the first step before restoring a film and writing an audio description for it. That is what this site is for, and we do the same work on commission — audio description and captioning, with published rates.