The Habeas Corpus Act 1679 is an Act of Parliament in England (31 Cha. 2. c. 2) during the reign of King Charles II.The writ of habeas corpus challenges the legality of imprisonment or detention, ensuring that no one is held without cause. The procedure for filing a petition for a writ of habeas corpus is spelled out in the CPLR Article 70. An act for the better securing the liberty of the subject, and for prevention of imprisonments beyond the seas, commonly called "the habeas corpus act." Federal habeas corpus is a procedure under which a federal court may review the legality of an individual's incarceration. Habeas Corpus, in the Federal Court, is a petition that claims that you are being detained against your US constitutional rights. The law requires that inmates have access to an effective, fair and expeditious grievance procedure. As a result, the inmate is entitled to written reasons. Writing a successful Petition for a Writ of Habeas Corpus requires care, skill, and experience.