Most NDAs do expire. A well-drafted nondisclosure agreement sets a term, and once that term runs out, the contractual duty to keep the information secret ends. But the expiration date on the front of the agreement rarely tells the whole story: survival clauses can extend specific obligations past the term, trade secret law protects certain information indefinitely on its own, and separate duties like returning or destroying materials can outlive the confidentiality period entirely.
How the Term Is Set
Every carefully drafted NDA includes a term clause defining the window during which confidentiality applies. Two structures dominate. A fixed-period NDA states that obligations last for a set number of years from signing. An event-based NDA ties expiration to something concrete: the end of a business relationship, the completion of a joint project, or the public launch of a product the information relates to.
The length reflects how quickly information loses its competitive value. Technology and software companies frequently use one- to three-year terms because products and processes evolve fast. Pharmaceutical and manufacturing companies, whose research cycles run a decade or longer, routinely negotiate ten-year terms or more. A range of two to five years is common across industries, though NDAs anywhere from one year to indefinite are all in circulation.
Survival Clauses Can Outlast the Agreement
Here is the wrinkle that catches people off guard: the NDA itself can expire while certain obligations inside it keep running. That happens through a survival clause, which specifies that particular provisions remain in effect after the agreement terminates. Confidentiality is the provision most often given a survival period, frequently one to five years past the end date. An NDA with a two-year term and a three-year survival clause effectively creates five years of confidentiality protection.
Survival clauses can also run until a defined event, such as the information becoming publicly available. If your NDA has a survival clause, read it before you assume you are free of the obligation. The stated term on the cover page is not the operative date.
Ending an NDA Early
Both parties can agree in writing to end an NDA before its stated term. A mutual release extinguishes confidentiality obligations going forward. Some NDAs include unilateral termination provisions letting either side exit with written notice, though the confidentiality obligations often survive termination for a stated period anyway.
Confidentiality obligations also end naturally when the information becomes publicly known through no fault of the receiving party. Once information is genuinely public, there is nothing left to protect and the duty falls away.
Perpetual NDAs
Some agreements are drafted with no end date at all, creating a perpetual or indefinite confidentiality obligation. These are common in employment agreements, merger negotiations, and any context involving trade secrets. Courts treat perpetual NDAs with skepticism when the protected information does not qualify as a trade secret. For ordinary confidential information, many courts will limit enforcement to what they consider a reasonable period, which in practice tends to fall between two and five years depending on the industry.
Where perpetual NDAs hold up well is trade secret protection. Both state and federal law independently protect trade secrets for as long as the information meets the legal definition, and courts recognize that tying an NDA’s duration to the life of the trade secret is reasonable.
Trade Secrets Keep Binding You Regardless
Even if your NDA expired last month, disclosing information that qualifies as a trade secret can still land you in court. Trade secrets receive independent legal protection under both state and federal law, and that protection does not depend on the NDA at all.
State Protection
The Uniform Trade Secrets Act has been adopted by 48 states, the District of Columbia, the U.S. Virgin Islands, and Puerto Rico. New York is the notable holdout, relying on common law that reaches similar results through different reasoning. Under the UTSA, information qualifies as a trade secret when it derives economic value from not being generally known and the owner takes reasonable steps to keep it secret.1Legal Information Institute. Trade Secret Protection lasts as long as both conditions hold. Once the information becomes widely known or the owner stops guarding it, trade secret status disappears.
Federal Protection
The Defend Trade Secrets Act of 2016 created a federal cause of action for trade secret misappropriation, letting owners sue in federal court rather than relying solely on state law. The federal definition mirrors the UTSA: independent economic value from secrecy, and reasonable measures to keep the information secret.2Office of the Law Revision Counsel. 18 US Code 1839 – Definitions Remedies include injunctions, damages for actual losses and unjust enrichment, exemplary damages of up to twice the compensatory amount for willful and malicious misappropriation, and attorney’s fees in bad-faith cases. The statute of limitations runs three years from when the misappropriation was discovered or should have been discovered.3Office of the Law Revision Counsel. 18 US Code 1836 – Civil Proceedings
The practical takeaway: an expired NDA does not make trade secrets fair game. If the information still meets the legal definition, you face potential liability under both state and federal law no matter what the NDA’s term clause says.
Federal Laws That Cut Enforceability Short
Even when an NDA has not expired, federal law restricts what confidentiality obligations can be enforced in certain contexts.
The Speak Out Act
Signed into law in December 2022, the Speak Out Act makes pre-dispute NDA and non-disparagement clauses unenforceable when the underlying dispute involves sexual assault or sexual harassment.4United States Congress. Public Law 117-224 – Speak Out Act The key phrase is “pre-dispute.” An NDA signed as part of an employment agreement before any harassment occurred cannot silence you about that harassment. Settlement agreements signed after allegations have been made remain enforceable, since the parties entered them knowing of the dispute. The law does not affect NDA provisions protecting trade secrets or proprietary business information.
NLRB Restrictions on Severance NDAs
In its 2023 McLaren Macomb decision, the National Labor Relations Board ruled that employers violate federal labor law by offering severance agreements that require employees to broadly waive their rights under the National Labor Relations Act. The decision targeted confidentiality and non-disparagement clauses so sweeping they would prevent workers from discussing workplace conditions or organizing with coworkers.5National Labor Relations Board. Board Rules That Employers May Not Offer Severance Agreements Requiring Employees to Broadly Waive Labor Law Rights An overly broad NDA in a severance package can be unenforceable from day one, regardless of its stated duration.
Return-or-Destroy Obligations Can Outlive the NDA
When an NDA expires, the duty to keep information confidential ends, but most NDAs impose a separate duty to return or destroy the materials. This typically kicks in on the earliest of the agreement’s expiration, the completion of the project, or a written request from the disclosing party. You generally need to send back or destroy all physical and electronic copies using methods appropriate to the sensitivity of the information.
Many agreements require written certification confirming destruction. A common exception allows retention of one archival copy for legal compliance or dispute resolution, and most agreements recognize that copies in automated backup systems will be purged through normal rotation. Any retained copies remain subject to confidentiality until they are actually destroyed, even if the NDA has otherwise expired. Ignoring the return-or-destroy requirement can create liability on its own, because handling the materials properly is a separate contractual duty from confidentiality.
What Breaching an Active NDA Costs
Duration matters because violating an NDA while it is still in force carries real consequences. Courts can issue injunctions on an emergency basis, sometimes within days, ordering you to stop disclosing or using the information. Beyond that, the NDA holder can pursue money damages measured by actual losses, lost profits, or the value of the compromised information. Many NDAs let the winning party recover attorney’s fees. Where trade secrets are involved, the Defend Trade Secrets Act adds exemplary damages of up to double the compensatory award for willful and malicious misappropriation, plus attorney’s fees.3Office of the Law Revision Counsel. 18 US Code 1836 – Civil Proceedings A single breach can trigger liability on multiple fronts at once.
Before You Treat Information as Free to Use
Once the term has run, any survival period has elapsed, and the information does not qualify as a trade secret, the receiving party is free to use or disclose it without contractual risk. In practice, the line between expired confidential information and still-protected trade secret is not always obvious.
Ask two questions before treating anything as fair game. Does the information still derive economic value from being secret? Has the owner continued taking reasonable steps to protect it? If the answer to both is yes, your NDA’s expiration changes nothing about your legal exposure. The information remains protected under the UTSA (or New York common law) and under the federal Defend Trade Secrets Act.1Legal Information Institute. Trade Secret When in doubt, treat the information as protected. Unnecessary caution costs nothing; guessing wrong can cost years of litigation.