For the most part, federal court jurisdictions only hear cases in which the United States is a party, cases involving violations of the Constitution or federal law, crimes on federal land, and bankruptcy cases. Federal courts also hear cases based on state law that involve parties from different states.
The types of cases heard in federal court are those in which the United States is directly involved. For example, cases with parties in different states often qualify for federal court. Federal courts also hear cases pertaining to Constitutional law, copyright, patient law, maritime activity and violations of federal laws.
What is the federal court system responsible for? Federal courts hear cases involving the constitutionality of a law, cases involving the laws and treaties of the U.S. ambassadors and public ministers, disputes between two or more states, admiralty law, also known as maritime law, and bankruptcy cases.