The Illinois Petition to Modify/Terminate is a legal document used to modify or terminate an existing court order in Illinois. This petition is typically filed in the circuit court of the county in which the original order was issued. It is typically used in family law cases such as child support, visitation, and custody arrangements. There are two types of Illinois Petition to Modify/Terminate: a petition to modify an existing court order and a petition to terminate an existing court order. The petition to modify an existing court order is used when one or both parties wish to make changes to the current court order. The petition to terminate an existing court order is used when one or both parties wish to end the existing court order. The petitioner must provide specific information, such as the original court order, reasons for the request, and details of the proposed changes. The respondent must be served with the petition in order for it to be heard in court. Once the petition is filed, the court will determine whether a modification or termination is appropriate.