Use a Complaint or Petition. If you prepare your own petition, file it with the Clerk of Family Court on the 11th floor of the courthouse at.Introduction to representing yourself in Pennsylvania. Each of the documents listed below inculde a blank form and the instructions to fill out that form. Upon completing all the necessary forms for your complaint or petition, you should make two copies and file all three with the Prothonotary's office. In order to receive visitation rights, grandparents must meet certain criteria set out in the Pennsylvania Grandparent Visitation Rights Act. Learn how grandparent custody works in Pennsylvania. Call Gibson Family Law, PLLC today at (267) 337-6524. File?" in the Introduction for more information about what county you should file in. Philadelphia County (Custody): Petition to Modify Custody.