Husband invested in market equity shares, debentires, bonds, etc and inserted his wife as second holder - therefater opened Demat account with 1st name of husband and wife joint demat account in 2000. Wife died in 2008 at age of 70+ after making a will 3 month prior to death stating that she bequesths all her 'movable and immovable properties' to her younger son without specifying details of bank accounts, location of flats etc.
She was a simple housewife and never had any income of her own during her life time nor any gifted properties from her parents. She had never filed any tax returns nor even had a individual savings account. Husband filed all income tax returns towards dividends, interest, etc from investements of shares, debenetures, bonds etc.
Now the younger son has filed for probate claiming 50% in joint demat account, jointly held flat, and also individividual saving demat and PPF accounts of husband -his father. He also claims 50% of his fathers self created HUF demat and savings account.
What defense does the husband of deceased wife have to defend his assets in court.