Can limitation period effect my rights over property

In a court case in 2002 i along with my family members were given shares in my fathers property...later on all my family members orally told me that they will give another property for me and pleaded me that my brother will live in my fathers property ,like these type of settlements and almost 15 yrs completed...vexed with their behaviour i filed a partition suit and in the written statement ..my brother replied that i and my family members have givenup our shares orally and that is why none including the plantiff have claimed their share in the property.more over all my family members because of some personal grudges and problems are supporting my brother... * i am in a misconception that decree given by court is valid for life time and this is also one reason for which i did not insist on partition..they are utilizing my ignorance about law and created as said above 1)Can limitation period affects my rights over the property? 2)is oral partition as said by my family members valid?