Mutual Non-Disclosure Agreement: Clauses and Drafting Steps

A mutual non disclosure agreement protects confidential information when two parties expect to disclose sensitive material to each other. Before drafting or signing one, confirm what it covers, who may receive the information, and how long each party's duties will continue.

Key Takeaways

• An MNDA creates confidentiality duties for both parties because either side may disclose protected information.
• Use a one-way NDA instead when only one party will provide confidential information.
• Define protected information, permitted uses, exclusions, authorized recipients, security duties, and required disclosures clearly.
• Address oral disclosures and the use of third-party technology, including generative AI tools, before sharing sensitive material.
• Distinguish the agreement's term from the period during which confidentiality duties survive.
• Governing law, remedies, and enforceability can vary by state and by the information involved.

What Is a Mutual Non-Disclosure Agreement?

A mutual non-disclosure agreement, also called a mutual NDA or MNDA, is a contract under which each party may disclose confidential information and each party agrees to protect information received from the other. The parties might be individuals, companies, or one of each.

An MNDA does not automatically make every conversation or document confidential. The agreement should identify which information qualifies, the reason it may be used, and any steps needed to designate it as confidential. It also does not necessarily impose identical obligations. The parties can negotiate different confidentiality periods, security measures, or disclosure rights if the contract states those differences clearly.

For example, two software companies evaluating an integration may exchange source code, technical specifications, pricing, and customer information. Each company acts as a disclosing party when providing its own information and as a receiving party when obtaining the other company's information. The MNDA establishes reciprocal duties for those separate exchanges.

An NDA generally restricts disclosure and use. It does not itself transfer ownership, grant a patent or copyright license, require either party to proceed with a transaction, or guarantee that the information is accurate. Those subjects require separate language or agreements. For a broader review of confidentiality provisions, see the key elements of a business confidentiality agreement.

Mutual NDA vs. One-Way NDA

The correct form depends on the expected flow of information, not simply the names or bargaining power of the parties. Choose a mutual NDA when both sides will provide protected material. Choose a unilateral, or one-way, NDA when only one side expects to disclose confidential information.

A mutual form is not always better. Unnecessary reciprocal language can create obligations for a party that does not expect to receive anything confidential. Conversely, using a one-way form for a two-way exchange may leave one party's information outside the agreement.

Map the expected exchange before choosing a form. List the categories each side will disclose, the people who need access, and the intended use. If only one column contains meaningful information, a unilateral NDA may be more suitable. If both columns contain trade secrets, technical data, financial information, or business plans, an MNDA usually provides a more balanced framework.

When Should You Use a Mutual NDA?

Use an MNDA before a substantive two-way exchange begins. Common situations include evaluating a joint venture, negotiating a strategic partnership, developing a product, discussing a license, reviewing a merger or acquisition, or exploring a transaction in which both parties must provide financial and operational records.

Two individuals may also use an MNDA when evaluating a business idea, combining intellectual property, or planning a venture. The contract should use their full legal names and explain whether they sign personally or for an existing entity. If a company will own or disclose the information, naming only its founder may create avoidable uncertainty.

For a business sale, an MNDA may be appropriate when the buyer will also provide protected financing, strategy, or integration information. The seller's disclosure is often more extensive, so the duties do not have to be identical merely because the agreement is mutual. Additional transaction-specific considerations appear in this explanation of a business sale non-disclosure agreement.

An MNDA is less useful when the parties cannot identify a legitimate confidential exchange or when disclosure is prohibited by another contract, law, or professional duty. It also cannot eliminate practical risk. Limit initial disclosures to what the other party actually needs, use staged access for highly sensitive material, and verify that the signer has authority to bind the named party.

Essential Mutual Non-Disclosure Agreement Clauses

A workable MNDA should tell both parties what they must protect and what they may do with it. Review these clauses closely:

• Parties and purpose: Identify the legal parties and state the transaction, project, or evaluation for which information may be used.
• Confidential information: Describe protected categories, such as source code, designs, financial records, pricing, customer data, trade secrets, prototypes, and business plans.
• Use restriction: Limit use to the stated purpose. A promise not to disclose information may be inadequate if the recipient can still use it competitively.
• Exclusions: Common exclusions cover information already known without a confidentiality duty, independently developed, publicly available through no breach, or lawfully received from another source.
• Permitted recipients: Specify whether employees, contractors, affiliates, attorneys, accountants, or financing sources may receive information and what confidentiality duties apply to them.
• Required disclosure: Address subpoenas, court orders, and other legally compelled disclosures. The clause may require notice when legally permitted and reasonable cooperation regarding protective measures.
• Security: Establish an appropriate standard of care and any specific storage, access, copying, or incident-reporting requirements.
• Return or destruction: Explain what happens to documents, copies, notes, backups, and derived materials when discussions end or the discloser requests their return.
• Remedies: State available contractual remedies without assuming that a requested injunction or other remedy will automatically be granted.

Avoid definitions so broad that the recipient cannot determine what is protected. At the same time, a definition limited only to documents stamped "confidential" may omit demonstrations, conversations, or unmarked technical material. The right balance depends on how the parties will communicate and store information.

Sample MNDA Structure and Drafting Framework

A sample NDA between two companies should be treated as a framework, not a finished contract. The following order helps the parties address the exchange logically:

1. Title and effective date: Name the agreement and state when it begins.
2. Parties: Include each entity's full legal name, entity type, and relevant address.
3. Purpose: Define the specific evaluation, negotiation, or project.
4. Protected information: List the covered categories and formats, including any rules for marking information.
5. Exclusions: Identify public, previously known, independently developed, and lawfully obtained information.
6. Recipient duties: Restrict use, disclosure, copying, reverse engineering, or other conduct relevant to the exchange.
7. Permitted recipients: Identify representatives who need access and establish responsibility for their handling of the information.
8. Compelled disclosure: Provide a process for legally required disclosure.
9. Security and incidents: Set reasonable safeguards and notice requirements for unauthorized access or disclosure.
10. Term and survival: State the agreement term and the separate confidentiality period.
11. Return or destruction: Address physical records, electronic files, backups, and retention required by law or policy.
12. Ownership and no license: Confirm that disclosure does not transfer intellectual property rights unless another agreement says otherwise.
13. Remedies and governing law: Address breach, dispute procedures, governing law, and the chosen forum.
14. Entire agreement and amendments: Explain how the MNDA relates to prior discussions and how it may be changed.
15. Signatures: Include authorized names, titles, signatures, and dates.

If the exchange involves valuable trade secrets, source code, customer data, investor discussions, multiple jurisdictions, or disputed disclosure rights, consider having a lawyer define the protected information, tailor reciprocal duties and exceptions, align duration and remedies with applicable law, and negotiate language matching the actual exchange. You can post your legal need on UpCounsel's marketplace, where responses typically arrive within a day.

Oral Disclosures, AI Tools, and Third-Party Access

Oral disclosures create proof and scope problems because the parties may disagree about what was said or whether it was confidential. An MNDA can cover oral information automatically, require the speaker to identify it as confidential when disclosed, or require a written summary within an agreed period. No single method fits every exchange.

Automatic coverage favors the discloser but can make compliance difficult for the recipient. Written confirmation creates a clearer record but may leave information unprotected if the discloser misses the required step. Choose a process your teams can follow during meetings, demonstrations, calls, and informal discussions. Meeting notes and follow-up notices should identify the subject without unnecessarily repeating the sensitive material.

Do not assume that an NDA permits entering confidential information into ChatGPT or another AI tool. First examine the agreement's permitted-use clause, authorized-recipient language, third-party disclosure restrictions, security requirements, and restrictions on copying or processing. Then review the provider's current official terms, applicable account settings, and data-handling terms. Tool terms and features can change, so verify them at the time of use.

Obtain written authorization before using an external AI service when the MNDA does not clearly permit it. Consider whether prompts, uploaded files, outputs, logs, integrations, or vendor personnel could involve disclosure or retention. The same analysis applies to cloud storage, transcription services, collaboration platforms, and outside contractors. An internal approval process can prevent employees from treating a convenient tool as an automatically authorized recipient.

Duration, Termination, and State-Specific Enforceability

The agreement term and the confidentiality period are different. The agreement term controls when the parties may exchange information under the MNDA. The confidentiality period controls how long a recipient must protect information after receiving it or after the relationship ends.

For example, an MNDA may govern a limited evaluation while confidentiality duties survive for a longer period. Trade secret language may require different treatment from ordinary business information because the value of a trade secret depends on it remaining secret. Avoid choosing a duration merely because it appears in a template. Consider how quickly the information becomes obsolete, the burden of continued protection, and applicable law. This discussion of NDA time periods provides additional guidance.

Enforceability depends on the contract's language, the facts, governing law, and the remedy requested. Courts may examine whether the protected information was identified adequately, whether the restrictions were reasonable, whether the recipient actually received the information, and whether an exclusion applies. State law can also affect interpretation and available remedies. Parties selecting New York law can review this overview of NDA enforceability in New York, while confirming current law for their transaction.

If a breach occurs, preserve the agreement, disclosure records, access logs, communications, and evidence of resulting harm. Available responses may include demands to stop use, return or destroy materials, contractual claims, or requests for court relief. The consequences described in what happens after an NDA breach depend on the agreement and governing law.

How to Draft and Sign an MNDA

Start with the actual information flow instead of copying a generic form. Ask each party what it will disclose, why the other side needs it, who requires access, which systems will store it, and when the information will lose sensitivity.

1. Confirm the correct legal names and signing authority of both parties.
2. Write a narrow, accurate purpose for the disclosure.
3. Define confidential information by category and format.
4. Select a practical method for identifying oral and unmarked disclosures.
5. Add exclusions and a process for required legal disclosures.
6. Identify employees, advisers, affiliates, contractors, and technology providers that may receive access.
7. Set security, return, destruction, and incident-notice duties that both parties can perform.
8. Choose the agreement term and confidentiality period separately.
9. Review ownership, no-license, remedies, governing-law, forum, and amendment clauses.
10. Sign before exchanging sensitive information and retain an executed copy.

After signing, follow the agreement operationally. Label files when required, restrict access, keep disclosure records, and train personnel who will handle the other party's information. If the project changes, amend the purpose or covered categories rather than assuming the original language reaches a new transaction. An MNDA is most effective when its terms match the parties' real conduct.

Frequently Asked Questions

Who Can Write a Non-Disclosure Agreement?

Individuals and businesses can prepare their own NDA, but an attorney can draft or review it. Legal review is especially useful when the agreement covers high-value intellectual property, regulated data, unusual remedies, or parties in different states. Each company should also confirm that the person signing has authority to bind it.

What Does MNDA Mean?

MNDA means "mutual non-disclosure agreement." The label alone does not determine the contract's effect, so read the operative provisions to confirm that both parties can act as disclosers and recipients. Some contracts use titles such as "bilateral NDA" or "reciprocal confidentiality agreement" while creating substantially similar duties.

Can I Put NDA Information Into ChatGPT?

You should not enter NDA-protected information into ChatGPT without confirming that the disclosure and processing are authorized. If confidential material was submitted accidentally, preserve relevant records, stop further use, follow your organization's incident process, and review any notice duties in the NDA instead of assuming that deleting a conversation resolves the issue.

Can You Provide a Sample NDA Between Two Companies?

A two-company MNDA can follow the clause-by-clause framework above, but it should identify each company's exact legal name, authorized signer, affiliates, representatives, and intended exchange. A useful sample must also account for the companies' industry, information systems, negotiation purpose, and governing law rather than relying only on standard reciprocal promises.

Does a Mutual NDA Require Both Parties to Share Information?

No, a mutual NDA generally permits two-way disclosures but does not require either party to disclose anything unless it expressly says so. A party may decide not to provide particular material, provide it in stages, or require additional safeguards. Separate transaction documents may create disclosure duties that the MNDA itself does not impose.