Okla. Stat. tit. 10, § 10-7700-201: Establishment of parent-child relationship

A. The mother-child relationship is established between a woman

and a child by:

1. The woman’s having given birth to the child;

2. Adoption of the child by the woman; or

3. As otherwise provided by law.

B. The father-child relationship is established between a man

and a child by:

1. An unrebutted presumption of the man’s paternity of the

child under Section 8 of the Uniform Parentage Act;

2. An effective acknowledgment of paternity by the man under

Article 3 of the Uniform Parentage Act, unless the acknowledgment

has been timely rescinded or successfully challenged;

3. An adjudication of the man’s paternity;

4. Adoption of the child by the man; or

5. As otherwise provided by law.