Log in to access forms. Select the type of form listed below for direct links to TEAS and TEASi forms.In the Trademark Electronic Application System (TEAS), we have one initial application form with two filing options: TEAS Plus and TEAS Standard. Apply online (TEAS). File a trademark application and other documents online through TEAS. We're going to talk about how to file your own trademark application with the united states patent and trademark office. The US Patent and Trademark Office (USPTO) is the agency responsible for granting US patents and registering trademarks. To apply, use the Trademark Electronic Application System (TEAS) to complete the initial application. The initial application form has two filing options. If you are filing for a patent or trademark, an attorney can help you with that process.