Colorado

Can a known donor renounce his legal obligations as a parent?

Yes, this is possible under Colorado law. Even when a woman undergoes artificial insemination without physician supervision, the donor may not be considered the father in Colorado.

What if a known donor attempts to enforce his parental rights when the original intent was to be a sperm donor only?

This is possible under certain circumstances – specifically, if the donor “holds out” the child as his own through his relationship with the child, the donor may be able to assert parentage.

Does the state allow for second-parent adoption (i.e., for same-sex couples)?

Yes.

Does the state allow for multiple-parent families (when the child has more than two adults in a parenting role)?

Unknown; this issue has not been addressed.

Does the state recognize “de-facto” or “psychological” parentage (of an “acting” parent without a biological connection)?

Yes.