Forms on this website are PDFs with fillable fields. Forms should be downloaded to your computer before filling in the fields.In the Trademark Electronic Application System (TEAS), we have one initial application form with two filing options: TEAS Plus and TEAS Standard. Resources are available for Illinois residents to help inventors and entrepreneurs learn more about protecting their intellectual property. Our Chicago trademark attorneys provide Illinois and USPTO (federal) trademark registration services to businesses of all sizes. We're going to talk about how to file your own trademark application with the united states patent and trademark office. This guide is for informational purposes only and is not intended to provide legal advice or to substitute for the legal advice of an attorney at law. Book a free consultation today with Drishti Law to learn how our trademark attorney can help you with trademark registration in Chicago. Do you have a product or service to protect? Contact our intellectual property lawyer to ensure you timely and properly register a trademark.