ORS 109.214

If the marriage of a parent who gave birth to a child conceived by assisted reproduction, other than under a surrogacy agreement, is terminated through dissolution, annulment or legal separation before the transfer that results in a pregnancy, the former spouse of the parent who gave birth to the child conceived by the assisted reproduction is not a parent of the child unless the former spouse consented in writing that the former spouse would be a parent of the child if a transfer resulting in pregnancy were to occur after a dissolution, annulment or legal separation, and the former spouse did not withdraw consent as provided in ORS 109.216.