A District of Columbia Motion to Quash Service of Process is a legal request used to challenge the validity of a service of process in a court of law, such as a civil lawsuit or criminal indictment. It is a formal document used to challenge the legal authority of the court to hear the case, and it must be filed by the defendant in the case. The Motion to Quash Service of Process must be supported by evidence and legal argument stating why the service of process should be quashed, or dismissed. There are two types of District of Columbia Motion to Quash Service of Process: Direct Quash and Constructive Quash. A Direct Quash is used to challenge the validity of the service of process by alleging that the service of process was not delivered properly to the defendant. A Constructive Quash is used to challenge the court's jurisdiction to hear the case, by alleging that the court lacks the authority to hear the case.