The defendant in a lawsuit must be served (delivered) a summons or citation (an order from the court to appear and answer the lawsuit) and a copy of the lawsuit (the complaint) (1) to provide due process (fairness) by giving the defendant notice of the lawsuit and the opportunity to appear in court and defend the lawsuit; and (2) to give the court personal jurisdiction (authority) over the defendant.
In New Hampshire, as in all states, the legal process requires that a defendant in a lawsuit be properly served with a summons or citation and a copy of the complaint initiating the lawsuit. This is to ensure due process, which is the constitutional right to fair treatment, by notifying the defendant of the legal action against them and allowing them the chance to appear in court to defend themselves. Additionally, service of process is necessary to establish personal jurisdiction, which gives the court the authority to make decisions affecting the defendant. New Hampshire's rules regarding service of process are outlined in the New Hampshire Rules of Civil Procedure. Typically, service can be made personally, by leaving the documents at the defendant's residence with someone of suitable age and discretion, or by mail, depending on the circumstances and the court's rules. Failure to properly serve a defendant can result in delays or dismissal of the lawsuit.