Washington Summons Notice About Non-Parent Custody Petition is a court summons issued by the Washington State court for the purpose of hearing a petition filed by a non-parent seeking custody of a minor child. It is used when a non-parent, such as a grandparent, aunt or uncle, or close family friend, wishes to obtain legal custody of a minor child in the state of Washington. It is also used when a non-parent seeks to modify an existing court order for custody of a minor child. The Washington Summons Notice About Non-Parent Custody Petition will provide the non-parent with the legal requirements for filing a non-parent custody petition, the court dates and times of the hearing, as well as the names of the parties involved. There are two types of Washington Summons Notice About Non-Parent Custody Petition: Temporary Custody Summons and Permanent Custody Summons.