Examples should not be stapled, glued or taped to the application. In the Trademark Electronic Application System (TEAS), we have one initial application form with two filing options: TEAS Plus and TEAS Standard.Book a free consultation today with Drishti Law to learn how our trademark attorney can help you with trademark registration in Chicago. Forms on this website are PDFs with fillable fields. Forms should be downloaded to your computer before filling in the fields. Log in to access forms. Select the type of form listed below for direct links to TEAS and TEASi forms. Our Chicago business attorneys provide a range of trademark legal services, including trademark registration and trademark enforcement services. Getting a patent in Illinois is the same as any other state. The patent application is filed with the United States Patent and Trademark Office (USPTO).