Derivative Work¶
Under U.S. copyright law, a work that recasts, transforms, or adapts a preexisting work, with new authorship and underlying rights assessed separately.
Core Idea¶
Under United States copyright law, a derivative work recasts, transforms, or adapts one or more earlier works. Translation and musical arrangement are statutory examples.[^ref-5216d998a813] Classification is only the first question: original new authorship determines whether added material can receive copyright, while the earlier copyright owner's right and any authorization or exception govern use of protected underlying expression.[^ref-5216d998a813] The new copyright never extends to the earlier material.[^ref-5216d998a813]
Scope of Application¶
This U.S. statutory rule applies where a new work recasts an earlier one; its habitats include:
- Literary translation: A new-language work recasts earlier literary expression.[ref-5216d998a813][ref-f56826a962e2]
- Musical arrangement: New musical choices reshape a preexisting composition.[ref-5216d998a813][ref-f56826a962e2]
- Public-domain source: Original additions can receive protection without reclaiming the earlier material.[ref-5216d998a813][ref-f56826a962e2]
- Protected source: The copyright owner's derivative-work right and applicable limits require separate analysis.[^ref-5216d998a813]
- Idea or fact boundary: Borrowing only unprotected material does not take protected expression.[ref-5216d998a813][ref-4b34f7397972]
The definition and consequences stated here are not a worldwide test. The examples name possible classes, not outcomes for particular works.
Clarity¶
Ask the questions in order. Classification: What earlier work is recast into the new one? Protection: What original expression, if any, did the new maker add? Lawful use: If protected earlier expression is used, what relevant right exists and what authorization or statutory limitation applies?[^ref-5216d998a813]
A mechanical copy does not gain copyright in new authorship merely by being labeled a derivative work.[ref-5216d998a813][ref-f56826a962e2] A derivative work is not automatically infringing: public-domain status, licenses, fair use, and other limits matter.[^ref-5216d998a813]
Manages Complexity¶
The rule separates the earlier expression from the later maker's contribution. That prevents protection of a translation or arrangement from being mistaken for ownership of the underlying novel or composition.[^ref-5216d998a813] It also keeps the legal category separate from the eventual outcome of an originality or infringement analysis. Track the earlier work, the new work, added expression, underlying protection status, and lawful-use basis as different items.
Abstract Reasoning¶
For a proposed case, identify the earlier work and the specific recasting. Then mark which material was already present and which is new. Finally identify the earlier material's protection status and, if protected expression is used, the copyright owner and any lawful-use basis.[^ref-5216d998a813] A conclusion at one stage does not automatically answer the next. The useful moves are relation testing, layer separation, and a separate rights-and-exceptions check; none is a substitute for the others.
Knowledge Transfer¶
The same U.S. relation applies when a novel is translated and when a musical composition is rearranged: an earlier work supplies expression and a new work recasts it.[ref-5216d998a813][ref-f56826a962e2] The artistic choices differ, but the separation of new authorship from earlier rights stays useful. Across those media, the question is which earlier expression survives in the later form, not whether the maker calls the result an adaptation. A generic system that “adapts” to its environment is a related comparison, not necessarily a derivative work in this legal sense.
Relationships to Other Abstractions¶
Current abstraction Derivative Work Domain-specific
Parents (1) — more general patterns this builds on
-
Derivative Work presupposes Copyright Domain-specific
The U.S. derivative-work classification and its separate added-authorship and lawful-use inquiries presuppose the copyright regime that defines them.
Hierarchy path (1) — routes to 1 parentless root
- Derivative Work → Copyright → Property Rights → Boundary
Neighborhood in Abstraction Space¶
Derivative Work sits in a sparse region of the domain-specific corpus (99th percentile for distinctiveness): few abstractions share its structure, so a faithful description tends to retrieve it precisely.
Family — Unclustered & Miscellaneous (2721 abstractions)
Nearest neighbors
- Cut-up technique — 0.76
- Mise en Abyme — 0.75
- The Heresy of Paraphrase — 0.75
- Rewriting — 0.74
- Original Reporting — 0.74
Computed from structural-signature embeddings · 2026-10-17
References¶
[^ref-5216d998a813]: U.S. Copyright Office, Copyright Law of the United States, Title 17, Chapter 1, especially §§101, 102(a)–(b), 103(a)–(b), 106(2), and 107. Official statutory text: https://www.copyright.gov/title17/92chap1.html. [^ref-f56826a962e2]: U.S. Copyright Office, Copyright in Derivative Works and Compilations, Circular 14, PDF pp. 1–2, examples and rights-scope explanation. The circular's registration-policy discussion says current Compendium policy supersedes it; the statutory text supplies the operative rule. https://www.copyright.gov/circs/circ14.pdf. [^ref-4b34f7397972]: U.S. Copyright Office, “What Does Copyright Protect?,” FAQ, first answer on ideas, facts, and expression. https://www.copyright.gov/help/faq/faq-protect.html.