1)your father should file suit for eviction of his son and daughter in law to direct them to deliver vacant possession of portion of house in their possession

2) your father should obtain a permanent injunction restraining his son and daughter in law from disturbing his peaceful possession of the house . since house has been bought by your father from his own funds court will grant you necessary reliefs

3)your mother should aso file domestic violence case against her son and DIL and obtain protection order against them

4) in case any false cases are filed by DIL contest it on merits and obtain Anticipatory bail

Your father have every right to file a eviction suit against his son and daughter in law. Dowry is not a matter upon your father. If any of the false case filed against father contest its on merit..Also seek and injunction to restraint from them to entering in to the property own by father.

1. Let your mother, if she is alive, file a DV case against your brother & Sister in law,

2. Let your parents also file a police complaint against the torture of your brother and sister in law,

3. After that let your father file a petition before the District Court under Order 39 Rule 1 & 2 praying for an order upon your brother and sister in law restraining their entry to he house of your father,

4. Your father can also file an eviction suit against your brother and sister in law,

5.They can contest the eviction suit but are not likely to favourable order from the Court.

You cannot get out of the problem until face the court of law.

If the property was your father' self acquired then she may be restrained from creating any problem as well as to evict her by filing suit for ejectment.

1. The property is owned by the one in whose favour the sale deed has been registered regardless of who paid the sale consideration.

2. Your father can file a lawsuit for eviction to evict your brother and his wife from the property owned by him. The eviction proceedings launched by your father can be contested by your brother's wife and her parents in defence but they will have to produce insurmountable evidence in the court to prove that the property was purchased from the money which was given to the dowry,