Giving an opinion about your invention; Interpreting USPTO rules; Filling out forms on your behalf; Offering legal advice of any kind. What is the Trademark Electronic Application System (TEAS)?.The Trademark Electronic Application System (TEAS) allows you to fill out online USPTO forms. The Secretary of State's office maintains registration and all updates of California state trademarks and service marks. Log in to access forms. Select the type of form listed below for direct links to TEAS and TEASi forms. Students working in this clinic focus on the application and registration process for federal trademarks and service marks. See upcoming and past events at the USPTO. We're going to talk about how to file your own trademark application with the united states patent and trademark office.