Trademark Application - Application for registration of a trademark or service mark. Rev. How do I submit an application to register a trademark or service mark in Texas?Log in to access forms. Select the type of form listed below for direct links to TEAS and TEASi forms. Applying for a Texas trademark registration is easy. Just fill out the Trademark or Service Mark Application Form, which can be obtained online. You can file an application to register your trademark or service mark with an intenttouse (ITU) filing basis. Texas Trademarks The Texas Secretary of State's web site offers Texas trademark forms and a searchable database of Texas trademarks. An experienced Bexar County trademark attorney can help you navigate the best way to register, maintain, and protect your trademark. Are you thinking of filing your trademark application yourself?