Daughter's right after supreme court judgement

My Grandfather had a self acquired property. He died on may 2002. He left behind 2 sons and 2 daughters. The Supreme Court had passed a judgement recently stating that Daughters right in fathers property is prospective and not retrospective. Whether this Judgement is applicable in ourcase and whether only two brothers are eligible to apply for sucession and inheritance of both movable and immovable property of the deceased.