An application for a writ of habeas corpus asks a court to overturn your conviction because of a state or federal constitutional violation. The writ of habeas corpus is the remedy to be used when any person is restrained in his liberty.A Writ of Habeas Corpus (Latin for "that you have the body") may be filed on behalf of a person who is unlawfully imprisoned. A writ of habeas corpus requires that a person who is in custody be brought before a judge or court and that they be able to challenge that custody. A writ of habeas corpus is a legal tool that a person can use to enforce a superior right of possession to a child. The state writ of habeas corpus is a legal mechanism that allows individuals to challenge their detention or imprisonment. A writ of habeas corpus is a legal order that commands an individual or entity to produce a person who is allegedly being detained unlawfully. Writs of Habeas Corpus. An application for a Writ of Habeas Corpus is filed when a person seeks relief from unlawful detention or imprisonment. (The district clerk of the county of conviction will fill in this blank.) IN THE COURT OF CRIMINAL APPEALS OF TEXAS.