A case that can be heard in either a state or federal court is sometimes called a "class action" case. Other cases that can be heard in federal or state courts are crimes that are punishable under both laws, federal constitutional issues, some civil rights claims, environmental regulations, and certain disputes that involve federal law.
Concurrent.
Concurrent jurisdiction
I would bring the case to state court, because if you bring the case to federal court it can't be heard again, but if you bring the case to state court then, if you lose, the case be appealed and heard again, if they chose to hear it, in supreme court then it can't be heard again if you lose again in supreme court.
Cases involving federal laws, the U.S. Constitution, or disputes between states are tried in federal court. Federal court cases differ from state court cases in that they involve federal laws and are heard by judges appointed by the President, while state court cases involve state laws and are heard by judges appointed by state governments.
State law crimes are heard in state court. Federal law crimes are heard in federal court. Both systems adjudicate different types of cases. In some cases the courts have concurrent jurisdiction and the authorities will conference to determine which court will take jurisdiction.
If you break a federal law (a law that is set by US Statutes and NOT by state statute) your case will be heard in Federal Court.
In civil court, the Rules of Civil Procedure are followed, either the State rules or the federal rules if the court is federal. One person brings a lawsuit, serving a summons on the defendant, then the defendant has a certain period of time to ANSWER (often 20 days). Motions are made and then the matter is heard before the court (either a Bench Trial or a Jury Trial), or the parties can settle before the case is heard in the court.
In federal court.
No. If the suit is over a certain dollar amount, it can be heard in federal court under diversity jurisdiction. If it involves federal law, it can also be heard in federal court under federal question jurisdiction. Unless it is a matter of exclusive federal jurisdiction, the state court maintains concurrent jurisdiction.
The majority of cases in the US are heard by the various state courts.
Concurrent jurisdiction
If a state court declares a state law unconstitutional, the state will probably appeal the case to the state supreme court. If a state court declares a federal law unconstitutional, the losing party in the case will appeal the decision in the federal courts. The case could ultimately be heard by the US Supreme Court; however, if a lower court reverses the state court's decision and either the appropriate US Court of Appeals Circuit Court or US Supreme Court decline to consider the case, the decision of the lower federal court would be final. The US Supreme Court is the ultimate arbiter of constitutionality.