Can i sell my property

Hello, My father died in 2005 and he did a registered will in 2001 and according to the will he gave me his 100 percent share in his property and all assests he had. our property was owned 50 percent by me and 50 percent by my dad before his death , and after his death according to the will i became owner of his share of the property as well. in 2009 my sister filed a case against me demanding her share in the property challenging the will. the case is still in court since last 12 years and there is no stay and has never been any stay on the property. I now want to sell the property. Can i do that?