Expungement is a process that lets you ask the court to remove certain kinds of court and police records from public view. Fill out the Application To Set Aside Conviction.Quash -- To set aside or to make void; with respect to process, such as a summons or subpoena, to void on motion of the person served. Aside changes the labeling of the conviction from "guilt" to "setaside". Also, it takes away certain negative consequences a "guilty" label carries. In Maryland, expunging your criminal record takes about 90 days from the date you file the necessary paperwork. If the court denies your timely request for a new trial, you may be able to still file an appeal depending on your case type. Fill out the Motion to Set Aside and Declaration in Support. Fill out the first part of the Petition. With the Developer's schedule as set forth in the application.