What Is a Non-Disclosure Agreement?
A non-disclosure agreement (NDA) — also called a confidentiality agreement, secrecy agreement, or proprietary information agreement — is a legally binding contract under which one or more parties agree not to disclose, use, or reproduce confidential information shared by another party. NDAs are among the most widely used commercial contracts in the world. They appear in nearly every transaction involving the exchange of sensitive information: hiring an employee, retaining a contractor, evaluating a potential acquisition, presenting a startup pitch, sourcing from a vendor, exploring a joint venture, or sharing proprietary technology with a partner. The core function of an NDA is simple: to convert what would otherwise be casual access to information into a legally enforceable obligation of secrecy.
NDAs come in three main structural variants. A unilateral (one-way) NDA protects information that flows from one party (the disclosing party) to another (the receiving party). It is appropriate when only one side has confidential information to share — for example, a startup pitching investors, an inventor showing a prototype to a manufacturer, or a company sharing customer data with a vendor. A mutual(bilateral) NDA protects information shared in both directions and is appropriate when both parties will exchange confidential information, as in M&A discussions, joint ventures, and strategic partnerships. A multilateral NDA covers three or more parties under a single agreement and is used for industry consortia, multi-party deals, and collaborative research arrangements where bilateral agreements would create unnecessary complexity.
An NDA must clearly identify what information it protects. The strongest NDAs use a hybrid approach: they (1) define "Confidential Information" broadly to capture any non-public business information shared between the parties, and (2) identify specific categories of trade secrets and proprietary data that require perpetual protection. Standard categories include customer lists, financial data, pricing information, business plans, marketing strategies, technical specifications, software source code, trade secrets, formulas, processes, and methodologies. The agreement should also state how confidential information must be marked or designated, whether oral disclosures are covered, and how the receiving party must handle the information (limited access, secure storage, return or destruction at termination).
Every well-drafted NDA includes standard exclusions that prevent the agreement from being weaponized to claim ownership of information that is not actually confidential. Information is excluded from confidentiality obligations if it (1) is or becomes publicly available through no fault of the receiving party, (2) was already known to the receiving party before disclosure, (3) was independently developed by the receiving party without using the confidential information, (4) was lawfully received from a third party without confidentiality obligations, or (5) is required to be disclosed by law, court order, or government regulation. NDAs covering employee information must also include whistleblower immunity language required by the federal Defend Trade Secrets Act, which protects employees who disclose confidential information to report suspected violations of law.
Unlike non-compete agreements, which face significant restrictions in many states, NDAs are generally enforceable in all 50 states because they protect specific information without preventing the recipient from working or earning a living. Courts routinely enforce NDAs against breaching parties through injunctive relief, monetary damages, and in trade secret cases, ex parte seizure orders under the Defend Trade Secrets Act. The DTSA also allows recovery of exemplary damages up to twice the actual damages for willful misappropriation, plus attorneys' fees. State laws based on the Uniform Trade Secrets Act provide similar remedies. The combination of strong enforcement, broad scope, and minimal regulatory friction makes the NDA the workhorse of confidentiality protection in American business.
Protects Confidentiality
Legally enforceable obligation to keep sensitive information secret
Trade Secret Defense
Establishes the reasonable secrecy efforts required for trade secret status
Universally Enforced
Enforceable in all 50 states unlike non-compete restrictions
NDA Form Preview
Below is a structured preview of the key sections in a non-disclosure agreement. Your final document will be tailored to the type of NDA you select, the parties involved, and the specific information being protected.
NON-DISCLOSURE AGREEMENT
Mutual / Unilateral / Multilateral
DISCLOSING PARTY
Name: [Legal Entity Name]
Address: [Street, City, State, ZIP]
RECEIVING PARTY
Name: [Legal Entity Name]
Address: [Street, City, State, ZIP]
PURPOSE OF DISCLOSURE
Purpose: [Evaluation, partnership, employment, vendor relationship, etc.]
DEFINITION OF CONFIDENTIAL INFORMATION
Categories: [Customer lists, financials, business plans, source code, etc.]
Marking: [Marked confidential / All disclosures]
OBLIGATIONS
1. Keep information strictly confidential
2. Limit access to need-to-know employees
3. Use only for the stated purpose
4. Return or destroy at termination
EXCLUSIONS
(a) Publicly available; (b) Already known; (c) Independently developed; (d) Lawfully received from third party; (e) Required by law
DTSA WHISTLEBLOWER IMMUNITY
Notice under 18 U.S.C. §1833(b): immunity from liability for confidential disclosure to government officials.
DURATION
Term: [2-5 years standard / Perpetual for trade secrets]
GOVERNING LAW & SIGNATURES
Governing Law: [State]
Disclosing: [Signature]
Receiving: [Signature]
Date: [Date]
Types of NDAs
Choose the NDA type that matches your relationship and the direction of information flow.
Mutual NDA
Both parties exchange and protect each other's confidential information
Unilateral NDA
One party shares confidential information with another who agrees to keep it secret
Confidentiality Agreement
General confidentiality protections built into employment, consulting, or vendor contracts
HIPAA Business Associate Agreement
HIPAA-compliant agreement covering protected health information shared with vendors
Multilateral NDA
Three or more parties exchange confidential information under a single shared agreement
NDA vs Non-Compete vs Confidentiality Clause
These three tools all protect business interests but operate very differently.
| Feature | NDA | Non-Compete | Confidentiality Clause |
|---|---|---|---|
| Protects | Specific information | Future employment | Information within a contract |
| Standalone document? | Yes | Sometimes | No (embedded) |
| Enforceability | All 50 states | Banned in CA, OK, ND, MN | All 50 states |
| Typical duration | 2-5 years (perpetual for trade secrets) | 6 months to 2 years | Same as host contract |
| Federal protection | DTSA available | No | DTSA available |
How to Write an NDA
Follow these steps to create an enforceable NDA that protects your information.
Choose the structure
Decide whether the NDA is unilateral, mutual, or multilateral based on the direction of information flow.
Identify the parties
Use full legal entity names and addresses. Verify signatory authority for each party.
State the purpose
Define the specific purpose for which confidential information may be used: 'evaluating a potential investment,' 'providing consulting services,' etc.
Define confidential information
Use a hybrid definition that covers all non-public information shared between parties plus specific categories of trade secrets and proprietary data.
Specify the obligations
List the receiving party's duties: maintain confidentiality, limit access, use only for the stated purpose, return or destroy at termination.
Include standard exclusions
Exclude information that is public, already known, independently developed, lawfully received from third parties, or required by law to be disclosed.
Add DTSA immunity language
Include the federally required whistleblower immunity notice for any NDA involving employees or contractors.
Set the duration
Use 2-5 years for ordinary confidential information; perpetual or longer for trade secrets.
Specify remedies
State that breach causes irreparable harm warranting injunctive relief, plus monetary damages and attorneys' fees.
Choose governing law
Select the state law that will govern the agreement and the venue for disputes.
Key Components
Every enforceable NDA contains these core provisions.
Parties
Disclosing party, receiving party, and any related affiliates.
Definition of confidential information
Specific categories and marking requirements.
Permitted purpose
The specific reason for sharing confidential information.
Confidentiality obligations
Duty to protect, limit access, and prevent disclosure.
Standard exclusions
Information not subject to confidentiality obligations.
DTSA immunity
Federally required whistleblower notice.
Term and termination
Duration of obligations and return/destruction of information.
Remedies
Injunctive relief, monetary damages, attorneys' fees.
Trade Secrets and the DTSA
The federal Defend Trade Secrets Act of 2016 (DTSA), codified at 18 U.S.C. §1836, created a federal cause of action for trade secret misappropriation. Before the DTSA, trade secret claims were governed exclusively by state law (typically state versions of the Uniform Trade Secrets Act). The DTSA gives plaintiffs the option to file in federal court, allows ex parte seizure of misappropriated materials, and provides for recovery of actual damages, unjust enrichment, exemplary damages of up to twice the actual damages for willful misappropriation, and attorneys' fees.
To qualify as a trade secret under the DTSA, information must (1) derive independent economic value from not being generally known to or readily ascertainable by other persons who can obtain economic value from its disclosure or use, and (2) be the subject of reasonable measures to keep the information secret. Reasonable measures include marking documents as confidential, limiting access on a need-to-know basis, using passwords and encryption, requiring NDAs, conducting exit interviews, and enforcing security policies. NDAs are essential evidence of these reasonable secrecy measures.
The DTSA requires employers to include whistleblower immunity languagein any NDA or employment contract that governs trade secrets. The required notice informs employees that they have immunity from civil and criminal liability for disclosing trade secrets in confidence to government officials when reporting suspected violations of law. Failure to include this notice forfeits the employer's right to recover exemplary damages and attorneys' fees in any DTSA action against the employee. This makes the immunity language a critical component of any NDA covering employees or contractors.
Standard Exclusions from Confidentiality
Standard exclusions are essential because they prevent the NDA from being weaponized to claim ownership of information that is not actually confidential. Without exclusions, the receiving party could be sued for using public information they happened to learn from the disclosing party.
Publicly available information
Information that is or becomes publicly available through no fault or wrongful act of the receiving party.
Prior knowledge
Information that was already known to the receiving party before disclosure, as documented by the receiving party's records.
Independent development
Information that is independently developed by the receiving party without reference to or use of the confidential information.
Third-party disclosure
Information lawfully received from a third party who is not under any confidentiality obligation to the disclosing party.
Required by law
Information required to be disclosed by law, court order, regulation, or government investigation.
Whistleblower disclosures
Information disclosed in confidence to government officials when reporting suspected violations of law (DTSA immunity).
Legal Requirements
NDAs must satisfy basic contract formation requirements plus several confidentiality-specific standards.
In writing
Oral confidentiality agreements are difficult to enforce. Always use a written NDA.
Specific scope
Confidential information must be defined with specificity, not vaguely as 'all information.'
Reasonable duration
Term must be reasonable for the type of information protected.
Adequate consideration
Each party must give something of value: information exchange, payment, or contractual relationship.
Authority to sign
Signatory must have actual or apparent authority to bind the entity.
DTSA compliance
Whistleblower immunity language is required for trade secret protection.
NDA by State
Below are all 50 states for which our NDA templates include state-specific compliance language.
Sample NDA
Below is the operative language of a representative mutual NDA. Your final document will include state-specific provisions, DTSA immunity language, and other required terms.
MUTUAL NON-DISCLOSURE AGREEMENT
This Mutual Non-Disclosure Agreement ("Agreement") is entered into as of [DATE], by and between [PARTY A] and [PARTY B](collectively, the "Parties").
1. PURPOSE. The Parties wish to explore [BUSINESS PURPOSE] and in connection therewith may disclose to each other certain confidential information.
2. CONFIDENTIAL INFORMATION."Confidential Information" means any non-public information disclosed by one Party ("Disclosing Party") to the other ("Receiving Party"), whether oral, written, or in electronic form, including but not limited to business plans, customer lists, financial information, pricing, technical data, source code, marketing strategies, and trade secrets.
3. OBLIGATIONS. The Receiving Party shall (a) hold all Confidential Information in strict confidence; (b) use it only for the Purpose; (c) limit access to employees, agents, and advisors with a need to know who are bound by similar confidentiality obligations; (d) protect it with the same degree of care it uses for its own confidential information, but not less than reasonable care; and (e) return or destroy it upon request.
4. EXCLUSIONS. The obligations herein do not apply to information that (a) is or becomes publicly available through no fault of the Receiving Party; (b) was already known to the Receiving Party prior to disclosure; (c) is independently developed by the Receiving Party without reference to the Confidential Information; (d) is lawfully received from a third party without confidentiality obligations; or (e) is required to be disclosed by law or court order.
5. DTSA NOTICE. Pursuant to 18 U.S.C. §1833(b), an individual shall not be held criminally or civilly liable under any federal or state trade secret law for the disclosure of a trade secret that is made in confidence to a federal, state, or local government official, either directly or indirectly, or to an attorney, solely for the purpose of reporting or investigating a suspected violation of law.
6. TERM. This Agreement shall remain in effect for [3 years] from the date of execution. Trade secret obligations shall continue for as long as the information qualifies as a trade secret under applicable law.
7. REMEDIES. The Parties acknowledge that breach of this Agreement may cause irreparable harm for which monetary damages are inadequate, and the non-breaching Party shall be entitled to injunctive relief in addition to all other available remedies.
8. GOVERNING LAW. This Agreement shall be governed by the laws of the State of [STATE].
Party A Signature
Name: _______________
Title: _______________
Party B Signature
Name: _______________
Title: _______________
Frequently Asked Questions
Common questions about NDAs, enforceability, trade secrets, the DTSA, and confidentiality obligations.
Official Resources
Trusted resources for additional information on NDAs, trade secret law, and confidentiality obligations.
USPTO Trade Secret Policy
Federal trade secret law and DTSA enforcement information
DOJ Economic Espionage Resources
Federal criminal trade secret prosecution under 18 U.S.C. §1832
HHS HIPAA Business Associate Guidance
HIPAA Business Associate Agreement requirements for protected health information
ABA Section of Intellectual Property Law
American Bar Association resources on trade secrets and confidentiality
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