Federal copyright law gives creators exclusive control over their works, but that control has boundaries. Copyright exceptions and limitations, set out in Title 17 of the U.S. Code, let the public use protected material without permission in specific situations — quoting a book in a review, reselling a used record, making a Braille copy, running a backup of software you own. Getting the boundaries wrong is expensive. Statutory damages run from $750 to $30,000 per work, and a court that finds willful infringement can push that ceiling to $150,000.1Office of the Law Revision Counsel. 17 USC 504 – Remedies for Infringement: Damages and Profits Each exception below has its own conditions, and they do not overlap in the ways people often assume.
Fair Use
Fair use is the most flexible and most litigated exception. Codified in 17 U.S.C. § 107, it allows use of copyrighted material for purposes like criticism, commentary, news reporting, teaching, scholarship, or research without asking the copyright holder.2Office of the Law Revision Counsel. 17 USC 107 – Limitations on Exclusive Rights: Fair Use There is no bright-line rule. Courts weigh four factors, and none is automatically decisive.
Purpose and character of the use. The central question is whether your use serves a different purpose or adds something new compared to the original. A use that transforms the original, turning a photograph into commentary for instance, gets more protection than one that simply repackages it. Commercial use weighs against you but does not automatically disqualify a fair use claim. Nonprofit and educational uses get a more favorable look.
Nature of the copyrighted work. Factual works like news articles and scientific papers are easier to claim fair use against than highly creative works like novels or songs. Unpublished works get stronger protection because the author’s right to control first publication carries independent weight.
Amount and substantiality. Copying a small excerpt is more likely to qualify than reproducing most of the original, but quantity is not the whole picture. Taking the “heart” of a work, the most memorable melody from a song or the key plot twist from a novel, can weigh against fair use even when the amount looks small.
Effect on the market. If your use competes with the original or undercuts its licensing revenue, this factor cuts sharply against fair use. Courts consider not just your individual use but what would happen if the same kind of use became widespread.
Parody, Satire, and the Warhol Limit
Parody has a stronger claim to fair use than satire, for a practical reason. A parody targets a specific work and needs to borrow from the original to make its point. The Supreme Court recognized this in Campbell v. Acuff-Rose Music, Inc., holding that 2 Live Crew’s parody of Roy Orbison’s “Oh, Pretty Woman” could qualify as fair use because the new work commented directly on the original.3Justia. Campbell v. Acuff-Rose Music, Inc. Satire uses someone else’s work as a vehicle to comment on society at large. Because the satirist does not need the original to make that broader point, courts ask why the borrowing was necessary.
The 2023 decision in Andy Warhol Foundation v. Goldsmith narrowed the transformative use analysis. The Court held that when a secondary work shares the same purpose as the original, both were commercial magazine illustrations of the musician Prince, adding new expression or meaning is not enough by itself to win on the first factor.4Supreme Court of the United States. Andy Warhol Foundation for Visual Arts, Inc. v. Goldsmith The more your use competes in the same market as the original, the harder it is to claim transformation, no matter how different your version looks or sounds.
Fair Use and AI Training
Whether training an AI model on copyrighted data qualifies as fair use is the largest unresolved question in copyright law right now. Dozens of lawsuits are pending, and no appellate court has issued a definitive ruling. The U.S. Copyright Office published a detailed analysis in 2025 concluding that some AI training uses will qualify and some will not, depending on the specifics.5U.S. Copyright Office. Copyright and Artificial Intelligence, Part 3: Generative AI Training
The Office treats training on a large, diverse dataset as often transformative when the model is used for research or tasks that do not compete with the originals. Training a model specifically to generate outputs that substitute for copyrighted works in the same market is much harder to defend. The Office flagged significant potential market harm under the fourth factor, noting that voluntary licensing markets for training data are emerging. The third factor generally weighs against AI developers because training typically ingests entire works, though effective guardrails that prevent the model from reproducing protected content could soften that weight.
The First Sale Doctrine
Once you lawfully own a physical copy of a copyrighted work, you can resell it, give it away, or donate it without permission. This principle, codified in 17 U.S.C. § 109, is why used bookstores, secondhand record shops, and library book sales exist.6Office of the Law Revision Counsel. 17 USC 109 – Effect of Transfer of Particular Copy or Phonorecord The doctrine exhausts the copyright holder’s distribution right over that specific copy once it changes hands.
The rule has limits. You cannot rent or lend sound recordings or software for commercial purposes. Congress carved out those categories to combat piracy. Nonprofit libraries can still lend both, and video game cartridges embedded in consoles are exempt from the rental restriction.
The doctrine also applies to copies manufactured abroad. In Kirtsaeng v. John Wiley & Sons, the Supreme Court held that books lawfully printed overseas could be imported and resold in the United States without the publisher’s consent.7Justia. Kirtsaeng v. John Wiley and Sons, Inc.
Digital goods are different. Courts have consistently held that transferring a digital file inherently creates a new copy, which implicates the reproduction right rather than distribution. And because most digital content is licensed to you rather than sold, through those end-user license agreements you click through, you typically never own the copy in the statutory sense, and the first sale doctrine does not apply.
Library and Archive Copying
Libraries and archives have their own set of copying privileges under 17 U.S.C. § 108. The institution may reproduce and distribute copies as long as the activity has no commercial purpose, the collection is open to the public or to outside researchers, and every copy includes a copyright notice.8Office of the Law Revision Counsel. 17 USC 108 – Limitations on Exclusive Rights: Reproduction by Libraries and Archives
For preservation, a library can make up to three copies of an unpublished work already in its collection, and only for preservation, security, or deposit at another qualifying library. Digital copies made under this rule cannot be distributed outside the library’s premises. For published works, up to three replacement copies are allowed when the original is damaged, deteriorating, lost, stolen, or stored in an obsolete format, but only after a reasonable search confirms an unused replacement is not available at a fair price.
Libraries can also copy a single article from a periodical, or a small portion of a larger work, for an individual researcher’s private study. If a patron requests a complete work, the library must first confirm that a copy cannot be obtained through normal commercial channels.
Classroom and Online Teaching
Instructors and students at nonprofit educational institutions can perform or display any copyrighted work during face-to-face classroom teaching without permission or payment.9Office of the Law Revision Counsel. 17 USC 110 – Limitations on Exclusive Rights: Exemption of Certain Performances and Displays You can show a full film, play a recording, or read a poem aloud as part of instruction. The work must have been lawfully acquired, and the activity must take place in a classroom or similar teaching space.
Schools routinely get this wrong. The exemption covers teaching, not entertainment. A movie night in the cafeteria, a film screening at an assembly, or a graduation performance falls outside the exception because the audience extends beyond students in a particular class and the purpose shifts from instruction to recreation. Schools that want to show films for non-instructional purposes typically need a public performance license.
Online and distance education falls under a separate provision known as the TEACH Act. It allows transmission of entire non-dramatic literary or musical works and limited portions of other works, like film clips, over digital networks, but only if the transmission is part of a regular class session, directed by an instructor, and restricted to enrolled students. The institution must implement technical safeguards that reasonably prevent students from keeping or redistributing content after the session ends. Schools that fail to maintain those controls lose the statutory protection entirely.
Accessible Formats for People with Disabilities
Under 17 U.S.C. § 121, authorized entities can reproduce previously published literary works and musical works fixed as text or notation in accessible formats — Braille, large print, audio, digital text — without the copyright holder’s consent.10Office of the Law Revision Counsel. 17 USC 121 – Limitations on Exclusive Rights: Reproduction for Blind or Other People with Disabilities These formats must be produced exclusively for eligible persons: people who are blind, have a visual or reading disability that prevents them from reading standard print, or have a physical disability that makes holding or manipulating a book impossible.
The Marrakesh Treaty Implementation Act expanded this exception by aligning U.S. law with international accessibility standards. Authorized entities can share accessible-format copies across national borders, and the definition of who qualifies was broadened to match the treaty’s language.11U.S. Copyright Office. Understanding the Marrakesh Treaty Implementation Act
Software Backups and Right-to-Repair
If you own a copy of a computer program, 17 U.S.C. § 117 lets you make a backup for archival purposes or create a copy that is a necessary step in running the software on your machine.12Office of the Law Revision Counsel. 17 USC 117 – Limitations on Exclusive Rights: Computer Programs The key word is owner. If your software came with a license agreement saying you are a licensee, this backup right may not apply, and most modern software is distributed under exactly that kind of license. Archival copies must be destroyed if you no longer have the right to possess the original.
Federal law generally prohibits circumventing digital locks on copyrighted software, but the Librarian of Congress grants temporary exemptions every three years. The current exemptions, effective through late 2027, allow you to bypass software protections to diagnose and repair:
- Motor vehicles, boats, and farm equipment, including access to embedded software to repair or lawfully modify vehicle functions.
- Consumer electronics, when necessary to diagnose, maintain, or repair devices designed primarily for consumer use.
- Commercial food preparation equipment, under a similar repair exemption.
- Medical devices and related data files, for diagnosis, maintenance, or repair.
These exemptions only cover the copyright barrier to accessing the software. Other laws still apply. Safety regulations from agencies like the FDA or Department of Transportation are not overridden.13Federal Register. Exemption to Prohibition on Circumvention of Copyright Protection Systems for Access Control
DMCA Safe Harbors
The Digital Millennium Copyright Act’s safe harbor provisions, in 17 U.S.C. § 512, protect online service providers from monetary liability for infringement committed by their users, provided the platform follows specific rules.14Office of the Law Revision Counsel. 17 USC 512 – Limitations on Liability Relating to Material Online Note the boundary: this protects platforms, not the individual user who uploaded the material. The statute creates four categories of protected activity:
- Passing data through: transmitting or routing content initiated by someone else, without selecting recipients or altering the material.
- Automatic caching: temporarily storing copies to speed up access for later users, through an automatic process.
- Hosting user content: storing material uploaded by users, provided the platform lacks actual knowledge of the infringement, does not financially benefit from it when it has the ability to control it, and removes the material promptly after a valid takedown notice.
- Linking to infringing content: operating search engines or directories that point to infringing material, under the same knowledge and takedown requirements as hosting.
The takedown-and-counter-notification process is where most of this plays out. A copyright holder sends a written notice identifying the infringing material, including a statement under penalty of perjury that they own the rights. The platform must take the material down promptly. The user who posted it can file a counter-notification, and if the copyright holder does not file a lawsuit within 10 to 14 business days, the platform restores the content. Platforms that ignore valid takedown notices or fail to designate a registered agent to receive them lose their safe harbor protection.
Government Works and Expired Copyrights
Works created by the federal government are not eligible for copyright protection at all. Under 17 U.S.C. § 105, anything produced by a U.S. government employee as part of their official duties enters the public domain immediately.15Office of the Law Revision Counsel. 17 USC 105 – Subject Matter of Copyright: United States Government Works Federal court opinions, congressional reports, NASA photographs, census data: all free to copy, distribute, and build upon. The government can receive copyrights transferred to it by others, so not everything on a .gov website is public domain. State and local government works follow their own rules, and many states do claim copyright in certain materials.
Copyright also expires on its own timeline. For works created on or after January 1, 1978, protection lasts for the author’s life plus 70 years. Works made for hire, along with anonymous and pseudonymous works, are protected for 95 years from publication or 120 years from creation, whichever comes first.16Office of the Law Revision Counsel. 17 USC 302 – Duration of Copyright: Works Created on or After January 1, 1978 For older published works, the general rule is 95 years from publication. As of January 1, 2026, everything published in the United States in 1930 or earlier is in the public domain, and each January 1 another year’s worth of works joins them.17Library of Congress. Lifecycle of Copyright: 1930 Works in the Public Domain
Where to Bring a Small Dispute
If you have a small-scale copyright dispute, federal court is not the only venue. The Copyright Claims Board is a tribunal within the Copyright Office that handles infringement claims, declarations of noninfringement, and takedown misrepresentation disputes. Total damages in any single proceeding are capped at $30,000, and statutory damages cannot exceed $15,000 per work for timely registered copyrights or $7,500 per work for others.18Office of the Law Revision Counsel. 17 USC 1504 – Nature of Proceedings Participation is voluntary. The other side can opt out within 60 days, which sends you back to federal court. For freelancers, photographers, and small creators who cannot afford full litigation, the CCB offers a faster and cheaper path to enforce rights or defend against a claim.19Copyright Claims Board. Frequently Asked Questions