Easy-to-use Arizona NDA template. Get a legally written Arizona Non-Disclosure Agreement Template for free!File with Clerk of Superior Court. Definition: A Perpetual NDA has no expiry date, meaning that the obligations of confidentiality continue indefinitely. Get a free confidentiality agreement template, or NDA, that you can quickly customize. Sign up now for custom legal forms, contracts and documents. Disclosure Agreement is a legal document for a person or company to protect confidential details. This policy serves to describe the City of Maricopa's privacy practices regarding the collection and use of information from visitors.