A marketing agency contract is a legally binding agreement that can provide legal protection in a dispute. This Advertising Agency Agreement ("Agreement") is made and effective this.Use our Nevada LLC Operating Agreement sample to create a legal document that regulates the internal procedures and functions of an LLC in the state. Make sure you indicate the marketing work is "work for hire" and the IP of the result belongs to the tech company. The template is fully editable so you can customize it to fit your circumstances. An advertising agency agreement is a legal contract between two or more parties, which sets out the terms of their business relationship.