You know there have been outcomes in your cases on both sides - I would still try my luck with it. Im not a family lawyer/civil, I deal only in insurance related matters but I seriously advise you to consider reaching out to a good civil lawyer for this - you may have something to claim.
You can find several good lawyers on lawyersclubindia only using the lawyerssearch above
Again take my word with caution, but Ithink you should have some stake in your father's property -chances are low - but still try for it.
PS - Again would like to repeat disclosure - this is not my area of expertise - its primarily in dealing with insurnace companies like reliance , bharti But Good luck to you, you deserve it, and I hope you get something