The person who is removed from the inheritance cannot get a share from the inheritance; cannot open a lawsuit.
Unless the inheritor has made a disposition otherwise, the inheritance share of the person who has been removed from the inheritance, as if that person has died before the heir, remains with the descendants of the heir, if any, or the legal heirs of the heir.
The descendants of the person who has been removed from the heir can demand his reserved share as if he had died before the heir.