Contact an award-winning Writ of Habeas Corpus lawyer today. Habeas Corpus, in the Federal Court, is a petition that claims that you are being detained against your US constitutional rights.Habeas Corpus is technically defined as "may you have the body. To speak with a Habeas Corpus proceedings lawyer in NYC about your case, contact Protass Law PLLC right away at 212-455-0335. This article addresses a defendant's right to file a federal petition for a writ of habeas corpus from a conviction in a state court. A Writ of Habeas Corpus is a civil proceeding that is available in both State and Federal Court to challenge the legality of imprisonment. Petition for a Writ of Habeas Corpus under 28 USC 2241. Category Representing Yourself (Pro Se). Such petitions can be filed if a defendant has been convicted in a New York state court as well as for defendants convicted in a federal court. Habeas Corpus is another Latin term, used in legal proceedings which means "You have the body".