Maryland DUI attorney, Maryland family attorney, Virginia DUI attorney, Virginia family attorney, DC DUI attorney, DC family attorney, who zealously advocates for his clients in courts throughout Maryland, Virginia and the District of Columbia. David brings with him significant trial experience in all three jurisdictions; and his practice includes all areas of criminal defense, DUI defense, major and minor traffic violations, domestic relations and family law, protective orders, personal injury, landlord-tenant, and other civil litigation.

He opened Marquardt Law Firm after gaining years of experience as a family law attorney, criminal defense attorney, and DUI attorney. David prides himself on the three foundations of his practice: dependability, experience, and aggressive representation. His attention to detail derives from his motto: “because your life is too important.” He firmly believes that every case requires creative strategy and planning to achieve a successful outcome. His impressive results, combined with an exceptional work ethic, have earned him the respect of his peers in being selected to the Maryland State Bar Association Leadership Academy, as well as the American Inns of Court.