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 Pennsylvania, the process of serving a defendant with a summons or citation, along with a copy of the complaint, is a critical step in initiating a lawsuit. This procedure ensures due process by notifying the defendant of the legal action against them and granting them the opportunity to respond and defend themselves in court. Additionally, service of process is necessary to establish personal jurisdiction, which gives the court the authority to make decisions affecting the defendant. Pennsylvania Rules of Civil Procedure outline specific methods of service, such as personal service, service by mail, or service by publication if the defendant cannot be located. The rules also stipulate time frames within which service must be completed and proof of service must be filed with the court. Failure to properly serve a defendant can result in delays or dismissal of the lawsuit.