Derivative Work

The right to authorize derivative works is one of the exclusive rights granted to copyright owners. Derivative works are governed by 17 U.S.C. § 101 and § 106 of the Copyright Act. The statute defines them as works "based upon one or more preexisting works" that involve transformation, adaptation, or other modification of the original material.

How a derivative work is created

A derivative work comes into existence when someone takes a copyrighted original and transforms, translates, adapts, or otherwise modifies it in a way that adds new creative expression. The new work must incorporate enough of the original to be recognizable as derived from it.

The process generally involves three elements:

1. A pre-existing copyrighted work. The source material being adapted
2. A transformation or adaptation. The creative act that produces the new work
3. Permission from the copyright owner. A license or assignment authorizing the adaptation, unless an exception applies

If the derivative work is created without authorization, the creator may be liable for copyright infringement, with statutory damages up to $150,000 per work in willful infringement cases, even if the new work is substantially different from the original.

Why derivative works matter

For creators, entrepreneurs, and businesses, understanding derivative works is essential to avoiding infringement liability. Using someone else's copyrighted content as the foundation for a new product, publication, or creative work, without a license, can expose a business to significant legal risk.

Equally important: copyright owners hold the exclusive right to authorize derivative works. This right has real commercial value. A novelist can license a studio to adapt a book into a film, or a software developer can license a third party to build a modified version of their code. Protecting and monetizing that right depends on understanding what qualifies as a derivative work.

For businesses that create original content, registering a copyright establishes a public record of ownership and strengthens the ability to enforce rights against unauthorized adaptations.

Common examples of derivative works

Derivative works appear across nearly every creative industry. Common examples include:

• Film adaptations of novels. A screenplay based on a published book is a derivative work of the original text
• Translated works. A Spanish translation of an English-language novel derives from the original
• Remixed or sampled music, a song that incorporates a recorded melody or lyric from another track, is a derivative work
• Software modifications. A modified version of an existing software program, or a plugin built on a proprietary codebase, may qualify as a derivative work
• Abridgments and condensed editions. A shortened version of a longer text that retains the original's expression
• Sequels and prequels. A new story that incorporates characters, settings, or plot elements from a copyrighted original

Each of these requires authorization from the original copyright holder before it can be lawfully created and distributed.

Key characteristics of a derivative work

Several features define whether a new work qualifies as a derivative work under copyright law.

• It incorporates protected expression from the original. A derivative work must borrow copyrightable elements, such as specific text, melody, or visual design, not merely ideas, facts, or general concepts, which are not protected by copyright.
• It adds new creative expression. The adaptation itself must reflect some degree of original authorship. A purely mechanical reproduction is not a derivative work; it is a copy.
• It carries its own copyright. The creator of a lawfully made derivative work holds a separate copyright in the new elements they contributed. However, that copyright does not extend to the underlying original material, which remains owned by the original copyright holder.
• It requires authorization. Creating a derivative work without the original owner's permission is infringement unless a legal exception, most commonly fair use, applies.

Derivative works vs. collective works

A derivative work is sometimes confused with a collective work. The distinction matters.

A collective work assembles separate, independently copyrightable contributions into a single whole, such as a magazine, anthology, or encyclopedia, without modifying those contributions. A derivative work, by contrast, transforms or adapts the underlying material into something new. In a collective work, the original pieces remain intact; in a derivative work, the original is the raw material for something different.

Considerations and limitations

• Fair use may apply. Not every use of copyrighted material requires permission. Fair use is a legal doctrine that permits limited use of copyrighted works for purposes such as commentary, criticism, parody, education, or news reporting.
• Public domain works are freely adaptable. Works whose copyright has expired, or that were never eligible for copyright, can be adapted without permission. Many classic literary works, historical texts, and early films fall into the public domain.
• Licenses must be clear. When licensing rights to create a derivative work, the scope of the license matters. A license to translate a book does not automatically grant the right to adapt it into a screenplay. Ambiguous licensing terms can lead to disputes.

Related terms and next steps

Understanding derivative works connects to several adjacent copyright concepts.

• Work made for hire. When a derivative work is created as a work made for hire, by an employee within the scope of employment, or under a qualifying written agreement, the employer or commissioning party, not the creator, owns the copyright in the new work. It determines who owns the copyright in a work created by an employee or contractor, including derivative works.
• Joint work. A work created by two or more authors with the intent that their contributions be merged into a single whole; distinct from a derivative work, which adapts an existing work.
• Collective work. Assembles independent works without transforming them, unlike a derivative work.
• Unpublished work. Copyright protection applies to unpublished works, meaning an unpublished original can still be infringed by an unauthorized derivative.

For creators and business owners who produce original content, registering a copyright with the U.S. Copyright Office creates a public record of ownership and is a prerequisite for filing an infringement lawsuit in federal court. An intellectual property attorney can help evaluate licensing needs, assess fair use questions, or advise on protecting rights in original works.

FAQs about derivative works

Is creating a derivative work always illegal without permission?

Not always, fair use can permit the creation of a derivative work without authorization in certain circumstances, such as parody, commentary, or criticism, though whether fair use applies depends on a case-by-case analysis of four statutory factors. Works in the public domain can also be freely adapted without permission, since their copyright has expired or never attached.

Who owns the copyright in a derivative work?

Ownership is split: the creator of a lawfully made derivative work holds copyright in the new creative elements they contributed, while the original copyright holder retains ownership of the underlying material. If the derivative work is created as a work made for hire, the employer or commissioning party, not the individual creator, owns the copyright in those new elements.

What is the difference between an original work and a derivative work?

An original work is one that owes its creative expression entirely to its author, without drawing on a pre-existing copyrighted source; a derivative work, by contrast, incorporates protected expression from someone else's prior creation and transforms or adapts it into something new. The distinction matters because creating a derivative work implicates the original copyright holder's exclusive rights in a way that creating a wholly original work does not.

Can a derivative work itself be infringed by someone else?

Yes, the creator of a lawfully made derivative work holds a copyright in the new material they contributed, and that copyright can be infringed by someone who reproduces or adapts those new elements without authorization. That protection, however, extends only to the original contributions in the derivative work, not to the underlying material owned by the original copyright holder.

How does a derivative work differ from a transformative work under fair use?

Every transformative work is a derivative work, but not every derivative work qualifies as transformative for fair use purposes. Transformation is one factor courts weigh, not a standalone test. A work that merely reproduces an original in a new format or medium is a derivative work, but courts are unlikely to find it transformative enough to excuse the absence of a license.

Does the scope of a license determine what derivative works are permitted?

Yes, a license grants only the rights expressly conveyed within it, so a license to translate a novel into another language does not authorize the licensee to adapt that novel into a screenplay or a stage production. When the scope of a license is ambiguous, courts generally construe it narrowly, which makes disputes over which adaptations were actually authorized common.