A Petition for Review is a legal document filed with a higher court to challenge the decision of a lower court. It is a request for a higher court to review and possibly reverse the decision of a lower court. It is usually the only way to challenge a lower court ruling. There are two main types of Petition for Review: an appeal and a writ of certiorari. An appeal is a request for a higher court to hear the case and review the lower court’s decisions. It is usually filed by the party who lost the case in the lower court. A writ of certiorari, on the other hand, is a request from the higher court to the lower court to send up the records of the case for review. It is usually filed by the party who won the case in the lower court.