Washington Response to Petition to Challenge Paternity Acknowledgment or Denial is the legal process of either confirming or denying a paternity acknowledgment or denial in the state of Washington. Depending on the circumstances, there are two types of Washington Response to Petition to Challenge Paternity Acknowledgment or Denial: voluntary acknowledgment and non-voluntary acknowledgment. A voluntary acknowledgment is when both parties voluntarily agree to the paternity acknowledgment or denial, which can be done through a paternity acknowledgment form. This form must be signed by both parties and witnessed by a Notary Public or other authorized third party. Once the form is completed and submitted, it is filed with the Department of Health and the court. A non-voluntary acknowledgment is when the paternity acknowledgment or denial is challenged in court. If the court determines that there is sufficient evidence to challenge the paternity acknowledgment or denial, a petition must be submitted to the court. This petition must include evidence to support the challenge, such as DNA testing or other forms of documentation. After the petition is filed, the court will review the evidence and issue a response. If the court finds the evidence valid, the paternity acknowledgment or denial will be overturned. If the court finds the evidence invalid, the paternity acknowledgment or denial will remain in place.