Motion to quash

A motion to quash is a request to a court to render a previous decision of that court or a lower judicial body null or invalid. It can arise out of mistakes made by any lawyer in a court proceeding. A lawyer may file a motion to quash if a mistake has been on the part of a court, or if an attorney believes that the issuance of some court document like a subpoena was not done in a legal manner.

For example, a party that receives improper service of process may file a motion to quash.