Okla. Stat. tit. 10, § 10-7503-2.2: When consent may be given

A. The mother of a minor shall not execute a valid consent to

the adoption of the minor or a permanent relinquishment of the minor

prior to the birth of the minor.

B. The father of a minor born in wedlock shall not execute a

valid consent to the adoption of the minor or a permanent

relinquishment of the minor prior to the birth of the minor.

C. A putative father of a minor may execute a consent to the

adoption of the minor, a permanent relinquishment of the minor, or

an extrajudicial consent to the adoption of the minor before or

after the birth of the minor.

D. A guardian, guardian ad litem or legal custodian of a child

may execute a consent to the adoption of a minor or a permanent

relinquishment at any time after being authorized by a court to do

so.

E. A child-placing agency that places a child for adoption may

execute its consent at any time at or before the hearing on the

petition for adoption.

F. A minor twelve (12) years of age or older whose consent is

required pursuant to Section 7503-2.1 of this title may execute a

consent to adoption at any time at or before the hearing on the

petition for adoption.