Non-Disclosure Agreements: What They Protect

NDAs are one of the most commonly signed business documents, but many people sign them without fully understanding what they're agreeing to keep confidential — or for how long.

What an NDA Typically Covers

An NDA restricts the recipient from disclosing or using specifically defined confidential information — trade secrets, business plans, customer lists, financial data, or proprietary technology — outside of the purpose for which it was shared.

Well-drafted NDAs define confidential information precisely, rather than vaguely, since overly broad definitions can be harder to enforce and can also unfairly restrict the recipient's ability to use their own general knowledge and skills.

Mutual vs. One-Way NDAs

A one-way (unilateral) NDA protects information disclosed by only one party, common when a company shares information with a potential vendor or contractor.

A mutual NDA protects information disclosed by both parties, more common in situations like merger negotiations or a potential business partnership where both sides are sharing sensitive information.

Common Limitations and Exceptions

Most NDAs include standard exceptions for information that's already public, was already known to the recipient before disclosure, or is independently developed without reference to the confidential information.

Duration matters significantly — some NDAs last only for a defined term, while others (particularly for trade secrets) can be drafted to last indefinitely as long as the information remains genuinely confidential.

Frequently Asked Questions

Can I be sued for violating an NDA I didn't fully read?

Yes — signing generally binds you to the terms regardless of whether you read them carefully, which is why review before signing matters.

Do NDAs expire?

It depends on the specific agreement; some have a defined term, while others remain in effect as long as the information stays confidential.

NDAs create real, enforceable legal obligations. An attorney can help you understand what you're agreeing to before you sign, or draft an NDA that properly protects your business's sensitive information.