My brother, the first woman got married two years ago, the brother was deprived of parental rights, his children are now in the name of a new husband, and now we found out that he adopted his children. Alimony is deducted from the brother, he serves. The former daughter-in-law does not provide any documents and court decisions, and the judiciary knows about it, but she did not deliver the adoption decision to them either. How should we deal with this and is it possible to take certificates and decisions somewhere for my brother and on what basis?