The US public-domain framework

For most of the 20th century, US copyright was tied to the act of publication — the moment a work was distributed to the public. The publication year determines which version of the Copyright Act applies, which in turn determines the copyright term, the renewal requirements, and whether the work is in the public domain today.

Two big statutes reset the rules: the 1976 Copyright Act (effective January 1, 1978) eliminated renewal for new works, and the Sonny Bono Copyright Term Extension Act (1998) added 20 years to existing terms. Both tools at PublicDomain.FYI apply these statutes automatically based on the metadata they collect.

• Before 1928: Definitively public domain in the United States.
• 1928–1963: Public domain unless the copyright was renewed in its 28th year. Roughly 85% of films from this era were never renewed and are now public domain.
• 1964–1977: Protected for 95 years from publication. Renewal became automatic in 1992.
• 1978 onward: Protected for the life of the author plus 70 years, or 95 years from publication for works for hire (which is most studio film).
• US federal government films: Public domain regardless of date — the federal government cannot hold copyright in its own works.

Foreign films are evaluated under similar US rules for US public-domain status, but the GATT/URAA restoration of 1996 re-copyrighted many foreign works that had fallen into the US public domain on technicalities. Our film tool flags this when relevant.

Sound recordings have always been a special case. Until 2018, they were governed by a patchwork of state laws and were effectively never going to enter the federal public domain. The Music Modernization Act (MMA) of 2018 finally gave sound recordings a federal copyright term and a clear path to the public domain:

• Pre-1923 recordings: Public domain as of January 1, 2022.
• 1923–1946: Public domain 100 years after publication.
• 1947–1956: Public domain 110 years after publication.
• 1957 through February 14, 1972: Public domain on February 15, 2067.
• February 15, 1972 onward: Standard federal copyright term applies (95 years for works for hire).

Compositions — the underlying songwriting — are governed by the standard copyright rules summarized in section 2. A recording can be public domain while the song it performs is still under copyright (or vice versa), so both layers must be checked separately. Our music tool handles this distinction.

For US works published from 1928 through 1963, the original copyright lasted 28 years. To extend protection, the rights holder had to file a renewal with the US Copyright Office in the 28th year. If they failed to renew, the work entered the public domain immediately and permanently.

Studies of Copyright Office records show that roughly 85% of works from this era were never renewed. This is why so many mid-century films, songs, and books are public domain today — and why renewal records are the single most important data source our tools consult for works from this period.

An orphan work is a work that is still under copyright but whose rights holder cannot be identified or located. The United States has no formal orphan-work safe harbor, which means using an orphan work without permission still carries legal risk — even if a rights holder is unlikely to ever surface.

Both of our tools flag works that appear to be orphan and recommend consulting counsel before commercial use. Public-domain status and orphan status look similar from the outside, but they are legally very different.

When you search a title, the tool collects metadata from authoritative sources (TMDB and the Internet Archive for films; MusicBrainz, the Cover Art Archive, and the Internet Archive for music), identifies which statutory rule governs the work, applies that rule to the metadata, and produces a written analysis with citations. The analysis flags ambiguity, missing data, and orphan-work risk.

The output is a research starting point — not legal advice. Always consult a qualified copyright attorney before commercial use of any work whose status is uncertain.