Wash. Rev. Code § 26.26A.485 : DOMESTIC RELATIONS — UNIFORM PARENTAGE ACT — PROCEEDING TO ADJUDICATE PARENTAGE —HEARING AND ADJUDICATION — Proceeding to adjudicate parentage-Child as party-Representation
(1) A minor child is a permissive party but not a necessary party to a proceeding under
RCW 26.26A.400 through
26.26A.515.
(2) The court shall appoint a guardian ad litem, subject to
RCW 74.20.310, to represent a child in a proceeding under
RCW 26.26A.400 through
26.26A.515, if the court finds that the interests of the child are not adequately represented.