A plaintiff can file in Federal Court under federal question juridiction, wherever the claimed injury occurred, or where the defendant can be found. So, the answer is "either" federal district court.
Hope this helps.
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Federal Courts have their own rules for pleadings. It will be similar but not identical to state court. Review the local court rules on the court's website.
A federal court can only assert subject matter jurisdiction over a case if (1) the case arises under the federal constitution, federal law or regulation. This is the basis of Federal Question Jurisdiction; or (2) where no defendant is domiciled in the same jurisdiction as any defendant, and the amount in controversy, exclusive of costs, exceeds $75,000.
See 28 USC 1331; 28 USC 1332.
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