Criminal appeal lawyers handle cases where convicted persons challenge the judgment of a trial court. It is because he believes he has not received due justice. In order to file an appeal, one must have substantial grounds for believing that they can obtain additional relief from the court. A court can review any important matter through an appeal, which allows an individual to request a review by a higher authority. A federal court can decide on an appeal if a federal circuit court or family court has an Australian judge to make a decision.