How long does the obligation of confidentiality last? the model contract proposes three alternative approaches: an indefinite period that ends when the information is no longer a trade secret; a fixed period; or a combination of both. Know-how does not always relate to secret information. Sometimes this means a certain type of technical knowledge that may not be confidential, but is necessary for the accomplishment of a task. For example, an employee`s know-how may be needed to train other collaborators on how to make or use an invention. Although know-how is a combination of secret and insecure information, we advise you to treat it as a protected trade secret. If you pass on know-how to employees or contractors, use a confidentiality agreement. A second function of the integration provision is that when a party makes commitments after the signing of the agreement, these promises are binding only if they are made in a signed amendment (addendum) to the agreement. Other formulas that could be protected as trade secrets are pharmaceutical, chemical and cosmetic compounds. We advise you to search as long as possible, preferably unlimited. But note that some companies want a fixed period and some courts, when interpreting NDAs, require that the period be appropriate.. . . .