Filing a trade name registers a business name for public record. Fill Out The Trademark Application.You can file trade names and trademarks through the Arizona Secretary of State website. All companies must file online. What is the process for filing a trade name or trademark in Arizona? To register a trade name or trademark applicants must use the Secretary of State online. Our comprehensive guide on "Trademark Arizona" will help you understand the ins and outs of securing your brand identity in Arizona. Resources are available for Arizona residents to help inventors and entrepreneurs learn more about protecting their intellectual property. The Office of the Secretary of State files the registration of trade names and trademarks in the State of Arizona. Patent and trademark law clinic gives students handson experience with impactful legal work.