Go to the court's web-site and fill out the forms. It may be filed only in a Pennsylvania magisterial district court and not in the Philadelphia Municipal Court.To file amendments for existing registrations, find and open the record through the "Search" tab in the Business Filing Services portal and request access. To obtain a legal name change in Pennsylvania, an applicant must submit a petition to the court. An applicant must also obtain a fingerprint card. While filling out the Petition, complete the caption and list your current name on the line provided. Do not fill out the Term or case number. Form from the Family Division of the Court of Common Please of Philadelphia that may be used in family law proceedings taking place in Philadelphia courts. Box 1: Print the name of the county you are filing in exactly as you wrote it on Form 1. Box 2: Print the name of the Plaintiff exactly at it appears on Form 1.