Alex is Sprintlaw's co-founder and a legal technology leader. He holds law and media degrees from the University of Sydney and has been recognized by Australasian Lawyer, Lawyers Weekly and the Sydney Young Entrepreneur Awards for his work building Sprintlaw and improving access to business legal support.
When US businesses or founders need to share confidential information with another party, a mutual non disclosure agreement (mutual NDA) is often the first document on the table. Whether you are discussing a potential partnership, merger, investment, or a new product, a mutual NDA helps ensure that both sides keep sensitive information private. But before you sign, it is important to understand how these agreements work, how state law can impact them, and what to watch for to avoid common mistakes.
What Is a Mutual Non Disclosure Agreement?
A mutual non disclosure agreement is a contract where both parties agree to protect each other's confidential information. This is different from a one-way NDA, which only protects the information of one party. In a mutual NDA, both sides expect to share and receive sensitive details, and both promise not to misuse or disclose what they learn.
- Example 1: Two software startups are considering a joint venture. Each will share proprietary code and business plans. They sign a mutual NDA so neither can use or reveal the other's information without consent.
- Example 2: A manufacturer and a product designer are exploring a partnership. Both will share designs, pricing, and supplier contacts. A mutual NDA protects both sides during these talks.
Mutual NDAs are common in situations like:
- Business sales or acquisitions
- Joint ventures and collaborations
- Product development projects
- Investment or fundraising discussions
- Vendor or supplier negotiations
These agreements are not just for large corporations. Startups, small businesses, and consultants often use mutual NDAs to protect their ideas and business data.
Key Elements of a Mutual NDA
While mutual NDAs can be tailored to your situation, most include several core elements. Understanding these will help you spot red flags and negotiate better terms.
- Definition of Confidential Information: This section should clearly describe what is considered confidential. It might include business plans, customer lists, software code, designs, pricing, or marketing strategies. Avoid NDAs that define this too broadly, such as "all information disclosed." Specificity helps prevent disputes later.
- Obligations of Each Party: Both parties must agree not to disclose or misuse the other's confidential information. This usually covers not sharing information with outsiders and not using it for purposes other than the agreed project.
- Exclusions: Most NDAs exclude information that is already public, independently developed, or received from another source without restriction. For example, if you already know something before the NDA, you are not bound to keep it secret.
- Term (Duration): The NDA should state how long the confidentiality obligations last. For general business information, this is often 2-5 years. For trade secrets, the obligation may last indefinitely.
- Permitted Disclosures: This section explains when information can be shared, such as with employees, contractors, or advisors who need to know. These people are usually required to be bound by similar confidentiality obligations.
- Remedies for Breach: The NDA should state what happens if someone breaks the agreement. This may include injunctive relief (a court order to stop disclosure) or monetary damages.
- Governing Law and Jurisdiction: The agreement should specify which state's law applies and where disputes will be resolved. This can impact how the NDA is interpreted and enforced.
Review each section carefully. Overly broad or vague terms can make the NDA difficult to enforce and may even be struck down by courts in some states.
How US Law Treats Mutual NDAs
There is no single federal law that governs NDAs. Instead, mutual NDAs are generally enforced under state contract law. This means that the rules can vary depending on the state specified in the NDA or where the parties are located.
- Enforceability: Most states will enforce a mutual NDA if it is reasonable and does not violate public policy. However, courts may refuse to enforce NDAs that are too broad, vague, or attempt to cover information that is not actually confidential.
- Trade Secrets: The federal Defend Trade Secrets Act (DTSA) provides a baseline for trade secret protection, but most states have adopted versions of the Uniform Trade Secrets Act (UTSA), which may differ in details. For example, what counts as a trade secret or how long obligations last can vary.
- State Variations: Some states have specific restrictions. For example, California law is strict about NDAs that restrict employee mobility or attempt to cover information that is not a true trade secret. Massachusetts and New York have their own nuances around enforceability and remedies.
- Public Policy Limits: NDAs cannot be used to hide illegal activity or prevent whistleblowing. Federal and state laws protect employees and others who report certain violations, regardless of NDA terms.
Always check which state law governs your NDA. If your business operates in multiple states, or you are dealing with a party from another state, consider how those state laws might impact your rights and obligations. The "governing law" clause in your NDA is not just boilerplate, it can affect the outcome if a dispute arises.
Example: A Texas business and a California startup sign a mutual NDA with a Texas governing law clause. If a dispute arises, Texas law will likely apply, but a California court may still refuse to enforce terms that violate California public policy, such as those restricting employee mobility.
What to Check Before Signing a Mutual NDA
Before you sign a mutual NDA, take time to review and understand its terms. Here is a practical checklist:
- Is the definition of confidential information specific? Look for clear categories. Avoid NDAs that cover "all information" or are vague about what is protected.
- Are the obligations balanced? Since both parties are sharing information, make sure the NDA is not one-sided. Each party should have similar duties and restrictions.
- How long do the obligations last? Check the term. For example, some NDAs last 2-5 years, while obligations to protect trade secrets may be indefinite. Make sure this fits your business needs.
- Are there reasonable exclusions? Make sure the NDA does not attempt to cover information that is already public, independently developed, or received from another source without restriction.
- What happens if there is a breach? Understand the remedies. Some NDAs allow for immediate court action (injunctive relief) or damages. Check if the agreement limits liability or sets out specific procedures for handling disputes.
- Does the NDA comply with state law? If you are in a state with specific rules (like California, Massachusetts, or New York), make sure the NDA does not include terms that are likely to be unenforceable.
- Governing law and jurisdiction: Confirm which state law applies and where disputes will be resolved. This can affect your legal options if something goes wrong.
- Are employees and contractors covered? Ensure that anyone who will access confidential information is required to keep it secret, either through the NDA or a separate agreement.
It is a good idea to have an attorney review the NDA before signing, especially if you are sharing highly sensitive business information or if the other party has drafted the agreement. Even small differences in language can make a big difference in court.
Common Mistake Example: A startup signs a mutual NDA that defines confidential information as "all information disclosed." Later, a dispute arises over whether a marketing idea was really confidential. Because the definition was too broad and vague, the court finds the NDA unenforceable. Clear, specific definitions help avoid this risk.
Common Scenarios and State Law Caveats
Mutual NDAs are used in many business situations, but the details project. Here are some typical scenarios, with state law tips and practical examples:
- Business Sales: When selling or buying a business, both sides may share financials, customer lists, and proprietary processes. A mutual NDA protects both seller and buyer. Learn more about business sales.
State Caveat: In states like California, NDAs cannot be used to prevent employees from moving to a competitor after a sale. - Joint Ventures and Partnerships: When two companies explore working together, each may disclose trade secrets or strategic plans.
State Caveat: In New York, courts may scrutinize the duration of NDAs and refuse to enforce obligations that last too long without good reason. - Product Development: Collaborating on new technology or products often requires sharing confidential designs, code, or know-how.
Example: Two companies co-develop a new app. Their mutual NDA covers source code and user data, but excludes anything already in the public domain. - Investment Discussions: Startups may share business plans and financials with potential investors, who may also share their own sensitive information.
State Caveat: Some investors, especially venture capital firms, may refuse to sign NDAs at all, citing industry norms. In these cases, consider what you share and whether you need a mutual NDA. - Vendor or Supplier Relationships: When negotiating with suppliers, both sides may need to reveal pricing, sourcing, or manufacturing details.
Example: A food manufacturer and a packaging supplier sign a mutual NDA before discussing custom packaging designs and cost structures.
In each of these scenarios, a mutual NDA helps set expectations and provides a legal framework for protecting shared information. But always consider how state law may affect the enforceability and scope of your NDA.
Checklist for Mutual NDA Use:
- Are both parties sharing confidential information?
- Is the information truly sensitive or proprietary?
- Does the NDA reflect state law requirements?
- Are the obligations and exclusions clear and balanced?
- Is the duration reasonable for your industry and state?
- Are remedies for breach practical and enforceable?
FAQs
Is a mutual NDA legally binding in every state?
Mutual NDAs are generally enforceable in most US states if they are reasonable and clearly drafted. However, state contract law can affect enforceability, especially around the scope of confidential information and the duration of obligations. Some states, like California, are more likely to strike down NDAs that are overly broad or attempt to restrict employee mobility. Always check the governing law clause and consider local legal requirements.
Can I use a template for a mutual NDA?
Templates can be a helpful starting point, but they may not address your specific needs or comply with state laws. For example, a template may not include the right exclusions or may set terms that are unenforceable in your state. It is best to customize the NDA for your situation and have it reviewed by a legal professional before signing.
What is the difference between a mutual NDA and a one-way NDA?
A mutual NDA requires both parties to keep each other's information confidential. A one-way NDA (also called a unilateral NDA) only protects the information of one party. Use a mutual NDA when both sides will be sharing sensitive information, such as during a partnership discussion or joint project.
How long should a mutual NDA last?
The duration depends on the nature of the information and the needs of the parties. Many mutual NDAs last 2 to 5 years for general business information. For trade secrets, obligations may continue indefinitely. Make sure the term is clearly stated in the agreement.
What happens if someone breaches a mutual NDA?
If a party breaches a mutual NDA, the non-breaching party may seek remedies such as an injunction (court order to stop the disclosure) or monetary damages. The specific remedies available will depend on the terms of the NDA and applicable state law.
Key Takeaways
- Mutual NDAs are contracts where both parties agree to protect each other's confidential information.
- These agreements are governed by state law, so enforceability and requirements can vary.
- Key terms to review include the definition of confidential information, obligations, exclusions, term, and remedies for breach.
- Mutual NDAs are commonly used in business sales, joint ventures, product development, and investment discussions.
- Always review the NDA carefully and consider legal advice before signing, especially if your business operates in multiple states or is sharing highly sensitive information.
- Be aware of common mistakes, such as vague definitions or ignoring state law requirements, which can make an NDA unenforceable.
For more information about contracts and how they can protect your business, visit our Contracts page. If you need help reviewing or drafting a mutual non disclosure agreement, contact our team at (888) 449-8437 or team@sprintlaw.com. Where legal services are required, they are delivered by licensed lawyers at trusted US law firms through the Sprintlaw platform.








