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. What kinds of marks may not be registered?But any licensed attorney is permitted to prosecute trademark applications. The Maryland registration statute: • Provides that a mark must be in use in Maryland to be eligible for registration. Getting a patent in Maryland is the same as any other state. The patent application is filed with the United States Patent and Trademark Office (USPTO). Log in to access forms. Select the type of form listed below for direct links to TEAS and TEASi forms. First, you need to assess whether or not your answer is patentable. Assess Your Inventions Patentability.