Skip to main content
The new Teacher Workspace is here. Your first 3 assignments are free. Try it →

Non-disclosure Agreement

A non-disclosure agreement is a contract that requires one or both parties to keep certain information confidential. In Contracts, you usually see it as a tool for protecting trade secrets, negotiations, and private business data.

Last updated July 2026

What is Non-disclosure Agreement?

A non-disclosure agreement, or NDA, is a contract that says certain information must stay private. In Contracts, it is used when one side, or sometimes both sides, needs to share sensitive information without losing control over it.

The core idea is confidentiality. If a business shares customer lists, pricing plans, software code, or merger details, the NDA tells the receiving party what they can and cannot do with that information. If the promise is broken, the injured party can sue for breach and may ask a court to stop the disclosure before more harm happens.

NDAs can be unilateral or mutual. A unilateral NDA is common when only one side is revealing secrets, like an employer interviewing a candidate or a startup pitching investors. A mutual NDA is used when both sides are sharing private information, such as in partnership talks or a purchase negotiation.

The agreement usually defines what counts as confidential, how long the duty lasts, and any exceptions. Common exceptions include information that becomes public, was already known, or was independently developed without using the protected material. Those details matter because an NDA is not just a promise to be secret forever. It is a contract with specific boundaries.

In contract law, NDAs often show up alongside injunctions. If someone threatens to leak protected information, a court may issue an injunction to prevent disclosure before the damage spreads. That is why NDAs are not just paperwork. They are a practical enforcement tool for keeping information inside the deal, the workplace, or the transaction where it belongs.

Why Non-disclosure Agreement matters in CONTRACTS

An NDA is one of the clearest examples of how Contracts protects information that has real economic value. A business may have little use for a promise that arrives after a secret is already out, so the contract has to be drafted and enforced with speed in mind.

This term also ties directly to remedies. A damages claim may compensate for losses after disclosure, but an injunction can stop a leak while the information is still being protected. That connection makes NDAs a good way to study how contract rights and equitable relief work together.

NDAs also show how contract language shapes behavior before a dispute even starts. The definition of confidential information, the length of the secrecy duty, and the allowed uses of the information can change the outcome of a case. When you read one in class, you are not just spotting a label. You are checking who promised what, for how long, and what happens if the promise is broken.

Keep studying CONTRACTS Unit 12

Official unit cheatsheet

open one-pager

How Non-disclosure Agreement connects across the course

Confidentiality Clause

A confidentiality clause is often the part of a larger contract that creates privacy duties, while an NDA is usually a standalone agreement built entirely around secrecy. The two do similar work, but the NDA tends to be more focused and easier to spot in a fact pattern. If a question asks what protects information inside a broader deal, look for the clause first.

Trade Secret

NDAs often protect trade secrets, but the two are not the same thing. A trade secret is the valuable information itself, while the NDA is the contract that helps keep it from being disclosed. In a case, the trade secret is the asset and the NDA is one of the legal tools used to guard it.

Breach of Contract

If someone shares protected information in violation of an NDA, that usually becomes a breach of contract claim. The plaintiff then argues that the agreement existed, the information was covered, and the other party disclosed it anyway. This makes NDAs a useful fact pattern for spotting contract formation plus breach in the same dispute.

non-compete agreement

A non-compete agreement and an NDA both limit what a person can do after a business relationship ends, but they restrict different things. An NDA limits disclosure of information, while a non-compete limits working for a rival or starting a competing business. Courts may treat them differently because one controls speech about information and the other controls competition.

Is Non-disclosure Agreement on the CONTRACTS exam?

A quiz question or case analysis might give you a deal, job offer, or merger scenario and ask whether a leaked document can be stopped. Your job is to identify the NDA, check whether the information fits the contract’s definition of confidential material, and then connect the facts to breach or an injunction. If the question asks for remedies, explain why money damages may be too slow when the harm comes from disclosure. If it asks about contract drafting, look for duration, exceptions, and whether the agreement is unilateral or mutual. In a fact pattern, those small details usually decide the answer.

Non-disclosure Agreement vs Confidentiality Clause

People mix these up because both protect private information, but they appear in different places. A confidentiality clause is usually one provision inside a larger contract, while an NDA is often a separate agreement made just to create secrecy duties. If the question is about one isolated promise to keep information private, it is probably an NDA. If it is one part of a bigger contract, it is more likely a confidentiality clause.

Key things to remember about Non-disclosure Agreement

  • A non-disclosure agreement is a contract that keeps specified information confidential.

  • NDAs are common when businesses, employers, or negotiating parties need to share sensitive information without public disclosure.

  • The agreement usually defines what counts as confidential, how long secrecy lasts, and what exceptions apply.

  • Breaking an NDA can lead to breach of contract claims, damages, and sometimes an injunction.

  • NDAs often work alongside trade secret law when the goal is to protect valuable business information.

Frequently asked questions about Non-disclosure Agreement

What is a non-disclosure agreement in Contracts?

A non-disclosure agreement is a contract that requires one or both parties to keep certain information private. In Contracts, it is used to protect sensitive material like trade secrets, business plans, and merger talks. If someone reveals the covered information anyway, the other party may sue for breach.

Is an NDA the same as a confidentiality clause?

Not exactly. A confidentiality clause is usually one section inside a larger contract, while an NDA is often a standalone agreement focused on secrecy. They can do similar work, but the structure matters in a fact pattern.

What happens if someone violates an NDA?

A violation can lead to a breach of contract claim. The harmed party may seek damages, and in some situations ask for an injunction to stop further disclosure. Courts care a lot about whether the information was actually covered by the agreement.

Why are NDAs used in business negotiations?

Business negotiations often involve private financial data, pricing, or product plans that a party does not want leaked. An NDA lets the parties share information while limiting how it can be used. That is especially common in mergers, acquisitions, and partnership talks.

Non-Disclosure Agreement in Contracts | Fiveable