Court fees can vary depending on the federal court. Generally, to initiate a lawsuit in federal court for patent, trademark, copyright, or domain dispute litigation, it costs $400. In addition, you have to pay between $60 to $200 to find a process server to physically find the defendant and give them a copy of a Complaint in their hand (or at their office). For this reason, to initiate a lawsuit, it can cost approximately $800. If you cannot afford to pay these fees, some courts have fee waiver options. If you want to explore such options, you should speak with a court clerk directly at a federal district court near you.