Contact the office at (410) 767-1184, or the Maryland Business Express link on the website DAT.Maryland.gov. 2. Any person who adopts and uses a mark in Maryland may file in the Office of the Secretary of State an application for registration of the mark.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. Patents and Trademarks. We can attend to preparing and filing a US Trademark Application. We can also advise on what rights you may already have based on actual use. Fill out the trademark application on the USPTO website. The forms are fairly self-explanatory.