Father's Death Property name

My Dad, James Paul Dsouza passed away on December 11 2017, My name is Jovina Dsouza my younger brother's name is Maris Joshua Dsouza and my Mother's name is Urmila James Dsouza. We live in the GCC Country Kuwait, I and my younger brother were born and raised in Kuwait. We all were settled in Kuwait for a long time. my mom and dad's marriage took place in Kuwait legally and we have all the paper works. 4 years before his death due to minor fights between my mom and dad, they decided to live separately but not divorced, and my dad used to renew mine and my brother's residency visa every year as he is our sponsor in Kuwait (In Kuwait the father is responsible for sponsoring his children) we used to live in the same area and everything in Kuwait. My question here is, now that my father passed away in 2017 while his short visit from Kuwait to Mumbai, his elder brother Oliver Dsouza is living in my dad's property and is not ready to give it to us. I wanted an advice what should I do in this situation. it's almost been a year that he is living there with another woman even though he is legally married to his wife, he has an elder daughter as well. My entire dad's family is aware of this situation and knows that the property should come to us, but Oliver is not ready to speak to anyone on this.