Dear Querist,
In case no will has been left by the person, the rules of succession will come into play. As per the Hindu Succession Act, the property will devolve upon all the Class I legal heirs in equal proportion. The legal heirs will have to obtain a succession certificate from the court for transfer of moveable assets (such a shares, mutual fund units, fixed deposits, bank accounts, PPF, insurance policies, bank locker, jewellery, stocks, demat account etc. )
The papers would be valid if there is no dispute with the property or documents of the property.
Regards,
Palak