Want this question answered?
lost the child to whom?
All possibilities exist.
No, he shouldn't be able to if she is legally married. If she was underage at the time of marriage and the custodial parent signed off on the marriage and that should have been the end of parental custody.
yes
yes he should do
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It is not very likely. The child is now legally the child of the adopting parents. Giving up the rights makes it difficult to get them back.
Yes, this is possible if the child hasn't been adopted. or the mother could destroy everything the child has known and regain custody after they are adopted. This would be a very wrong act and it is not recommended.
see your other question
If you're in the US, you would have to petition the court for a change of custody. Rather the court would grant your petition or not, would depend on many factors.
yes
Unless you can show that your consent was given under duress or fraudulently, then you're probably going to have to talk to the current adoptive parents and convince them to work with you to regain custody. You can consult a lawyer with experience in these matters and give them all relevant details for a better answer that is more specific to your situation.