In the Trademark Electronic Application System (TEAS), we have one initial application form with two filing options: TEAS Plus and TEAS Standard. The Mark MUST BE IN USE IN ILLINOIS prior to registration with this office.• The application form must be typed, laser printed or legibly printed in black ink. Gov for guidance on filling out trademark applications. The Trademark Division of the Illinois Secretary of State offers only one type of trademark application to protect a brand's unique logos, names, and symbols. Forms on this website are PDFs with fillable fields. Forms should be downloaded to your computer before filling in the fields. It is important to check with your instructor, editor or publisher to know which citation format to use. You can't patent an idea (like an idea for a better mousetrap), only an application of that idea in a practical invention. Tips for filing Wisconsin Trademarks: (must create free account).