Is an NDA without an expiration date legally binding?

Yes, in many jurisdictions, an NDA without an expiration date is legally binding and creates a perpetual obligation to maintain confidentiality, which can be difficult to enforce or defend in court.

How long should a standard NDA last?

Standard commercial NDAs typically range from 2 to 5 years. Trade secrets may require longer protection, but general business information should have a defined sunset clause.

Can a court strike down a perpetual NDA?

Courts often view perpetual restrictions as unreasonable restraints on trade. Depending on the jurisdiction, a judge may choose to 'blue-pencil' the contract to a reasonable duration or invalidate the clause entirely.

A TermScore is an AI-generated risk rating from 0 to 100 that evaluates the fairness and risk level of any legal document. A score of 86-100 means the contract is highly favorable, while 0-30 indicates dangerous terms you should walk away from.

What types of documents can TermScore analyze?

TermScore analyzes any legal document including freelance contracts, employment agreements, residential leases, NDAs, brand sponsorship deals, SaaS vendor agreements, and rental applications. Upload PDFs, Word documents, or images.

How much does TermScore cost?

TermScore offers a free plan with 3 scores per month. The Team plan is $15/month for 30 scores, and the Professional plan is $50/month for 500 scores with team collaboration features. One-time purchases are also available: a single score for $5 or a 5-pack for $15, with no subscription required.

Is my document data secure?

Yes. Documents are processed in memory and analysis results are stored encrypted. TermScore never shares your document data with third parties and you can delete your data at any time from your dashboard.

What are the legal implications of signing an NDA that lacks a specific expiration date?

The Legal Risks of Perpetual NDAs

Signing an NDA without a specific expiration date creates a perpetual obligation to protect confidential information. This exposes you to indefinite liability, complicates future business operations, and may be deemed an unenforceable restraint on trade by courts, depending on the jurisdiction and the nature of the information.

Why Perpetual NDAs Are Dangerous

When a contract lacks a sunset clause, the burden of confidentiality never lifts. This creates several operational and legal hazards for the receiving party.

1. Indefinite Liability

Without a defined term, you are legally obligated to protect the information forever. If a data breach occurs ten years after the business relationship ends, you could still be held liable for damages. This creates a long-term "ticking time bomb" on your balance sheet.

2. Operational Complexity

Maintaining a "confidential" status for data indefinitely requires rigorous document retention and tagging policies. Most companies lack the infrastructure to track and protect information for decades, increasing the risk of accidental disclosure.

3. Unenforceability Risks

Courts generally disfavor perpetual restrictions. In many states, including California, courts are highly skeptical of non-compete and non-disclosure agreements that lack a reasonable temporal limit, often viewing them as unreasonable restraints on trade.

Key takeaway: Always negotiate for a specific "sunset date" to ensure your liability is finite and manageable.

Action Item: Audit your current contract repository for any agreements lacking a "Term" or "Expiration" clause and flag them for legal review.

Standard Industry Timeframes

While every contract is unique, industry standards provide a benchmark for what is considered "reasonable" in commercial litigation.

Information Type	Typical Duration
General Business Info	2–3 Years
Strategic Plans	3–5 Years
Software Source Code	5–10 Years
Trade Secrets	Indefinite (until public)

Jurisdictional Nuances

The enforceability of perpetual NDAs varies significantly by region. Understanding these differences is critical for risk management.

California: Highly restrictive. Courts frequently invalidate perpetual NDAs that act as de facto non-competes.
New York: More flexible. Courts are more likely to uphold perpetual obligations if the information is clearly defined as a trade secret.
Delaware: Generally respects the freedom of contract, but still requires that restrictions be "reasonable" in scope and duration.

Action Item: If your contract is governed by the laws of a state with strict labor protections, prioritize shortening the term to 24 months or less.

How to Negotiate a Sunset Clause

If you are presented with an NDA lacking an expiration date, use these steps to mitigate your risk:

Identify the Information: Distinguish between general business knowledge and actual trade secrets.
Propose a Reasonable Term: Suggest a 3-year term for general information, which is standard for most B2B agreements.
Include a "Public Domain" Exception: Ensure the NDA explicitly states that the obligation ends if the information becomes public through no fault of your own.
Request a "Return or Destroy" Clause: Require that all confidential information be returned or destroyed upon the expiration of the term.

Key takeaway: If the other party insists on a perpetual term, limit the scope of the definition of "Confidential Information" to only include specific, highly sensitive trade secrets.

Action Item: Draft a standard "sunset clause" addendum that you can attach to any NDA presented to your team, ensuring consistency across all partnerships.

Automating Contract Risk Management

Manually reviewing every NDA for missing expiration dates is inefficient and prone to human error. TermScore uses advanced AI to instantly scan your contracts, flagging missing sunset clauses and suggesting industry-standard language to protect your business. By integrating TermScore into your workflow, you can ensure that your legal team focuses on high-value negotiations rather than tedious document auditing.