You can file trade names and trademarks through the Arizona Secretary of State website. All companies must file online.Compare the best Trademark lawyers near Maricopa, AZ today. Use our free directory to instantly connect with verified Trademark attorneys. Here is an overview of what you need to know about IP law at both a federal and state level: What are Patents, Trademarks, and Copyrights? Tradename Registration Guidelines. The registration of trade names and marks is not legally required in Arizona, but is an accepted business practice. You may only use the registration symbol with the trademark for the goods or services listed in the federal trademark registration. Located in Pinal County, just south of Phoenix, Maricopa offers a unique blend of small-town charm, community spirit, and urban development. Additional forms may be found at the Superior Court's Law Library Resource Center website.