Property disputes. current owner?

Hi, Grand father had two sons. My uncle died in 2012. According to muslim inheritance law my uncle's wife( 12.5%), his two sons(30.96%), three daughters(23.22%) along with my grandparents(33.34% grandparents were alive when uncle died)  become legal heir of my uncle properties. Now both of my grandparents died last year.

My question is Now who is the owner of share owned by my grand parents ?

We are all muslim and according to muslim inheritance law dead son does not get any inheritance.