Recovery of possession of immovable property after 12 yr. (delhi)

When, I was 6yrs old minor (1986), my father purchased property in my name through the legal documents Deed of Agreement for Sale, GPA & payment Receipt, these are registered with Sub-Registrar-IV office delhi. We have used physically this property for 3yrs. & due to lack of facility of hospital,school & electricity we have shifted another property in delhi. From 1989 to 1997 father visited on regular interval. Suddenly A property dealer (trespasser) who have vacant land in same size attached with my suit property & claimed ownership on behalf of forged documents. My father has filed suit for permanent injunction agt. him at Tiz Hazari Court,Delhi in 1997 as my legal guardian.In 2002 Sr.Civil Judge has passed decree that " File suit for possession agt defendant & do not dispossession without legal procedure" and dismissed present suit for suit for injunction because our advocate filed suit without declaration or title. My father is not much literate & our advocate not disclosed important point & suggest you can file suit for possession in future any time. After long lasting legal fight in court my father very disturbed & also suffer economically due to lost his job.Between this limitation time period Defendant/trespasser has expired/dead. All above over view, my questions are:- (1) If defendant has passed away(death) before limitation period, then after we should be liable to filed suit for possession. (2) This is vacant property with locked due to Defendant was damaged our structure of house & his family members never used this property physically. (3) Defendant family members can claimed this property against Adverse Possession and in this case limitation act applicable on me.