Dear Client,
Your deceased father was adopted by the brother of your grandfather, who subsequently canceled the said adoption. If the cancellation of the said adoption is not done following the procedure of relevant law and a decree of the Civil Court, then you have no claim against the adopted grandfather of your deceased father. Moreover, if the adoption of your deceased father is not done following the provision of the Hindu Adoption and Maintenance Act, 1956, then it cannot be considered a valid adoption and accordingly, you are not entitled to claim anything from your adopted grandfather of your deceased father. So the legal sanctity of both adoption and its subsequent cancellation is the determinative factor to establish your claim.

Dear Client,

In cases where an adoption is canceled, the legal rights and obligations of inheritance between the adoptive family and the adopted child are typically affected. Since your father was adopted by your grandfather's brother but the adoption was later canceled, it raises important questions about inheritance rights.
Legally, your next steps will depend on whether the cancellation of your father's adoption was valid and how it affects inheritance rights. Here’s what you can do to explore your legal options:

1. Verify the Legality of the Adoption Cancellation
Check for Legal Documentation: Confirm whether the adoption was legally canceled. Adoption cannot be canceled informally; it requires legal procedures and court approval under the Hindu Adoption and Maintenance Act (if applicable). Ensure you have access to any legal records related to the adoption cancellation.
Validity of Cancellation: If the cancellation was not done properly, you may challenge its validity in court. If you can prove that the cancellation was invalid or unlawful, your father’s legal status as the adopted son might still hold, and you could have rights to inherit from the adoptive family.
2. Examine Inheritance Rights
Inheritance from Adoptive Family: If the cancellation was valid, your father might have lost the right to inherit from his adoptive father. However, if the cancellation was not legally executed, you could still argue that he retained inheritance rights.
Inheritance from Biological Family: Since your father’s adoption was canceled, his legal ties to his biological family might have been restored. You may need to explore inheritance rights from the biological side of the family.
3. Legal Claims on Adoptive Family’s Property
Will or Testament: Check if the adoptive grandfather left any will or testament that specifies your father’s or your rights to inherit. Even with a canceled adoption, if your adoptive grandfather left assets to your father or you in his will, you may still have a claim.
Challenging Disinheritance: If there are reasons to believe that the cancellation of the adoption or the disinheritance was done unfairly or illegally, you may have grounds to challenge it in court. However, inheritance challenges must be based on strong legal reasons, such as improper procedures or violation of inheritance laws.

You may need to file a civil suit in a court of law if you want to challenge the adoption cancellation or seek inheritance. A local lawyer specializing in family and inheritance law in Andhra Pradesh can guide you through this process.
Different states might have local variations or interpretations of laws, so understanding the laws specific to Prakasam, Andhra Pradesh is essential. A lawyer familiar with the state's laws can assess your case and determine the best course of action.

Regards

Dear Sir,
No adoption which has been validly made can be cancelled by the adoptive father or mother or any other person. Thus, you may approach the Court and claim a share in the properties left by your adoptive father.