Washington Revised Code Title 26. Domestic Relations § 26.26A.235. Procedure for rescission of an acknowledgment or denial of parentage

(1) A signatory may rescind an acknowledgment of parentage or denial of parentage by filing with the state registrar of vital statistics a rescission in a signed record which is attested by a notarial officer or witnessed, before the earlier of:

(2) If an acknowledgment of parentage is rescinded under subsection (1) of this section, an associated denial of parentage is invalid, and the state registrar of vital statistics shall notify the woman who gave birth to the child and the individual who signed a denial of parentage of the child that the acknowledgment has been rescinded. Failure to give the notice required by this subsection does not affect the validity of the rescission.