While not required, you should put any confidentiality agreement in writing. For a trade secret to be protectable under Florida law, a business must protect that information as confidential.In Florida, the confidentiality obligations cannot be indefinite. The confidentiality and use obligation period is three (3) years from the expiration or termination of the Disclosure Period. Time Limitations often range from three years from the date of disclosure to five years from the termination or expiration of the NDA. Perpetual NDA: Definition: A Perpetual NDA has no expiry date, meaning that the obligations of confidentiality continue indefinitely. Confidentiality and non-disclosure agreements are commonly used in employer-employee relationships and in licensing matters.