Patent Center Overview provides details on how to file an application in Patent Center. Quick Clinic Video Series.Protect your intellectual property with Benjamin C. Rothermel, Esq. Law Firm in Hagerstown, MD specializing in IP law. 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). Resources are available for Maryland residents to help inventors and entrepreneurs learn more about protecting their intellectual property. F. (Benjamin Freeman) Kingsbury.