I'm curious about the adult adoption procedure.

For adult adoption, full adoption is not possible, but general adoption is possible.

However, to proceed with general adoption, the consent of the biological father is required.

If the biological father does not consent, you must obtain the court's decision through a "petition for adjudication in lieu of parental consent" to the family court.

However, if you cannot reach the biological father, it may become difficult to file a petition for adjudication in lieu of parental consent.

In such cases, efforts to prove that you did not receive the biological father's consent are necessary.

For example, you can request adult adoption consent from the biological father through certified content and submit the response to the court.

When adult adoption occurs, the parent-child relationship is legally established, but the family name and origin do not change automatically.

If you want to change your family name and origin, you must separately petition the family court for a change of family name and origin.

However, since cases where family name and origin changes are permitted for adults are rare, you must decide carefully.

For details on these procedures, we recommend learning about specific response measures through consultation with a family law specialist attorney.