Definition
Copyright is a form of federal legal protection that grants the creator of an original work of authorship a bundle of exclusive rights to use and control that work for a limited time. It protects creative expression — such as books, music, film, art, and software — once the work is fixed in a tangible medium. Copyright is governed by federal law under the U.S. Copyright Act, and protection arises automatically the moment the work is created and fixed.
Legal Meaning
Copyright in the United States is governed by federal law, specifically the Copyright Act of 1976 and its amendments, and is grounded in the Constitution's grant of power to Congress to promote the progress of science and useful arts. Because copyright is federal, the same basic rules apply nationwide rather than varying state by state. It protects "original works of authorship fixed in any tangible medium of expression," a phrase with two key requirements: the work must be original (independently created and minimally creative) and it must be fixed (recorded in some lasting form, such as written, recorded, or saved).
Crucially, copyright protects expression, not ideas. The line between the unprotectable idea and the protectable expression is fundamental. Copyright does not cover facts, ideas, systems, methods of operation, or discoveries — only the particular way they are expressed. So the plot concept of a love story is free for anyone to use, but a specific novel telling that story is protected. Likewise, names, titles, short phrases, and simple listings generally cannot be copyrighted, though some may be eligible for trademark protection instead.
A copyright owner holds a set of exclusive rights, including the rights to reproduce the work, prepare derivative works (adaptations), distribute copies, and publicly perform and display the work. These rights can be licensed or transferred, in whole or in part. When someone exercises one of these exclusive rights without permission and without a valid defense such as fair use, they commit copyright infringement, which can lead to civil liability and, in some cases, criminal penalties.
Key Points
- Copyright is governed by federal law under the U.S. Copyright Act
- Protection is automatic once an original work is fixed in a tangible medium
- It protects creative expression, not ideas, facts, systems, or methods
- Owners hold exclusive rights to reproduce, distribute, adapt, perform, and display the work
- Registration is optional but generally required before suing for infringement of a U.S. work
- Timely registration can unlock statutory damages and attorney's fees
- Fair use permits limited unlicensed use for purposes like commentary and teaching
- For most new works, protection lasts the life of the author plus 70 years
Real-World Example
A freelance photographer takes a striking photo and posts it on her website. From the moment she snaps and saves the image, she automatically owns the copyright — no registration or copyright symbol is required. A clothing company later copies the photo onto t-shirts and sells them without asking.
The photographer can pursue the company for copyright infringement, but to file a federal lawsuit she will generally need to register the photo with the U.S. Copyright Office first. If she had registered the work promptly after creation or publication, she could seek statutory damages and attorney's fees; without timely registration, she is generally limited to actual damages and the infringer's profits, which can be harder to prove.
What Copyright Does and Does Not Protect
| Generally Protected | Generally Not Protected |
|---|---|
| Books, articles, and other literary works | Ideas, concepts, and theories |
| Music, songs, and sound recordings | Facts and data (though selection/arrangement may qualify) |
| Films, videos, and other audiovisual works | Names, titles, and short phrases |
| Paintings, photographs, and graphic works | Systems, methods, and procedures |
| Software code and original databases | Works not fixed in a tangible medium |
| Architectural works and choreography | Works in the public domain or by the U.S. government |
Fair Use, Duration, and Registration
Several doctrines shape how broadly a copyright owner can control a work and for how long.
Fair Use
Fair use is a flexible doctrine allowing limited use of copyrighted material without permission for purposes such as criticism, comment, news reporting, teaching, scholarship, parody, and research. Courts weigh four statutory factors: (1) the purpose and character of the use, including whether it is commercial or transformative; (2) the nature of the copyrighted work; (3) the amount and substantiality of the portion used; and (4) the effect of the use on the market for the original. No single factor is decisive, and fair use is determined case by case.
Duration
For works created today by an individual, copyright generally lasts for the author's life plus 70 years. For works made for hire and certain anonymous or pseudonymous works, the term is generally 95 years from first publication or 120 years from creation, whichever expires first. When the term ends, the work enters the public domain and may be used freely by anyone.
Registration
Copyright exists without registration, but registering with the U.S. Copyright Office provides important advantages. Registration is generally a prerequisite to filing an infringement suit over a U.S. work, and registering before infringement (or within a grace period after publication) can make statutory damages and attorney's fees available — remedies that are often essential to making enforcement worthwhile.
Related Terms
Protecting or Defending a Creative Work?
An intellectual property attorney can help you register, license, or enforce your copyright
Explore Business LawWhen You Need a Lawyer
Copyright issues can be technical and the financial stakes high, so professional advice is often worthwhile. You should consult an intellectual property attorney if you are licensing your work, facing an infringement claim, or unsure whether your use of someone else's work is lawful. A lawyer can:
- Confirm whether your work qualifies for copyright protection
- Register your work and advise on the timing that maximizes available remedies
- Draft and negotiate licenses, assignments, and work-for-hire agreements
- Evaluate whether a use is likely to qualify as fair use
- Pursue or defend an infringement claim and seek injunctions or damages
Copyright law overlaps with other intellectual property rights, so it helps to understand the broader landscape; see our entry on intellectual property. For help finding counsel, review our guide on how to choose a lawyer.
Frequently Asked Questions
What does copyright protect?
Copyright protects original works of authorship that are fixed in a tangible medium of expression, such as books, music, films, photographs, software, paintings, and architectural works. It protects the expression of ideas, not the ideas, facts, systems, or methods themselves. Names, titles, short phrases, and works that are not original or not fixed are generally not protected by copyright.
Do you have to register a copyright to own it?
No. Under U.S. federal law, copyright protection arises automatically the moment an original work is fixed in a tangible form, without any registration or copyright notice required. However, registration with the U.S. Copyright Office is generally required before you can file an infringement lawsuit for a U.S. work, and timely registration can make statutory damages and attorney's fees available.
How long does copyright last?
For works created by an individual author today, copyright generally lasts for the life of the author plus 70 years. For works made for hire and certain anonymous or pseudonymous works, the term is generally 95 years from publication or 120 years from creation, whichever is shorter. When copyright expires, the work enters the public domain and may be freely used.
What is fair use?
Fair use is a legal doctrine that permits limited use of copyrighted material without the owner's permission for purposes such as criticism, commentary, news reporting, teaching, scholarship, and research. Courts weigh four factors: the purpose and character of the use, the nature of the copyrighted work, the amount and substantiality used, and the effect on the market for the original. Fair use is decided case by case.
What is the difference between copyright, trademark, and patent?
Copyright protects original creative works such as books, music, and art. Trademark protects words, names, logos, and symbols that identify the source of goods or services. Patent protects inventions and useful processes. All three are forms of intellectual property, and copyright, trademark, and patent are governed primarily by federal law, though trademarks also have common-law protection.