Washington Response to Petition to Decide Parentage (after Acknowledgment or Court Decision) is a legal document filed by the state in response to a petition to determine parentage. This document is filed by the state after a court or administrative decision has been made to determine parentage. The state's response will include any information necessary to establish the legal parent-child relationship between the parties, such as the name of the child, the names of the parties, and any court or administrative orders. There are two types of Washington Response to Petition to Decide Parentage (after Acknowledgment or Court Decision): Acknowledgment of Parentage and Court Order for Parentage. An Acknowledgment of Parentage is a voluntary statement of parentage issued by the state in response to a petition. It is an agreement between the parties that acknowledges the parent-child relationship. A Court Order for Parentage is issued by a court in response to a petition and establishes the legal parent-child relationship between the parties.