Pennsylvania Writ to Join Additional Defendant(s) is a legal document used to add additional defendants to a case or suit that is already in progress. The writ must be filed in the county court where the original case was initiated. There are two types of Pennsylvania Writ to Join Additional Defendant(s): a Writ of Summons and a Complaint. A Writ of Summons is issued by the court and served on the additional defendant to inform them of the action against them. A Complaint is a document that outlines the plaintiff's claims against the additional defendant. The additional defendant must then file an Answer to the Complaint. If the additional defendant fails to do so, they may be held in default. The Writ to Join Additional Defendant(s) must be properly served on the additional defendant before the court will consider the case. The writ must also include all pertinent information, such as the legal cause of action and the names and addresses of all parties involved.