A non-disclosure agreement (NDA), also known as a confidentiality agreement, confidential disclosure agreement (CDA), proprietary information agreement (PIA), or secrecy agreement, is a legal contract between at least two parties that outlines confidential material, knowledge, or information that the parties wish to share with one another for certain purposes, but wish to restrict access to by third parties. It is a contract through which the parties agree not to disclose information covered by the agreement. An NDA creates a confidential relationship between the parties to protect any type of confidential and proprietary information or trade secrets. As such, an NDA protects non-public business information.
NDAs are commonly signed when two companies, individuals, or other entities (such as partnerships, societies, etc.) are considering doing business and need to understand the processes used in each others business for the purpose of evaluating the potential business relationship. NDAs can be "mutual", meaning both parties are restricted in their use of the materials provided, or they can restrict the use of material by a single party.
It is also possible for an employee to sign an NDA or NDA-like agreement with an employer. In fact, some employment agreements will include a clause restricting employees' use and dissemination of company-owned "confidential information."
In some cases, the contract may state that the existence of the NDA itself cannot be disclosed.
Many NDAs are unilateral, or one-way agreements, where one party wants to disclose certain information to another party but needs the information to remain secret for some reason, perhaps due to secrecy requirements required to satisfy patent laws or to make sure that the other party does not take and use the disclosed information without compensating the discloser.
Another type of non-disclosure agreement is one that is a mutual agreement, where both parties will be supplying information that is intended to remain secret. This type of agreement is common when businesses are considering some kind of joint venture or merger.
Some practitioners insist on a mutual NDA in all cases, to encourage the drafter to make the provisions "fair and balanced" in case the drafter's receiving-party client later ends up as a disclosing party, or vice versa (not an uncommon occurrence).
A non-disclosure agreement can protect any type of information that is not generally known. However, non-disclosure agreements may also contain clauses that will protect the person receiving the information so that if they lawfully obtained the information through other sources they would not be obligated to keep the information secret. In other words, the non-disclosure agreement typically only requires the receiving party to maintain information in confidence when that information has been directly supplied by the disclosing party. Ironically, however, it is sometimes easier to get a receiving party to sign a simple agreement that is shorter, less complex and does not contain safety provisions protecting the receiver.
Some common issues addressed in an NDA include:
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