Washington Revised Code Title 26. Domestic Relations § 26.26A.620. Assisted reproduction--Limitation on spouse’s dispute of parentage

(a) Not later than four years after the birth of the child, the individual commences a proceeding to adjudicate the individual's parentage of the child; and

(b) The court finds the individual did not consent to the assisted reproduction, before, on, or after birth of the child, or withdrew consent under RCW 26.26A.630.

(a) The spouse neither provided a gamete for, nor consented to, the assisted reproduction;

(b) The spouse and the woman who gave birth to the child have not cohabited since the probable time of assisted reproduction; and

(c) The spouse never openly held out the child as the spouse's child.