Alain-Fabien Delon is pursuing a legal battle in Swiss courts to challenge his late father Alain Delon's will, aiming to disinherit his sister Anouchka Delon.This action follows a prior legal step in France and focuses on Anouchka's 51% stake in the Alain Delon brand, which Alain-Fabien alleges was obtained through exploiting their father's impaired discernment.