Prior to succeeding his father as royal claimant, Henri launched an unsuccessful court case (1987–1989) in which he challenged the right of his rival cousin Louis-Alphonse, Duke of Anjou, to use the undifferenced royal arms of France and the Anjou title. The French courts dismissed the case on the grounds that Henri failed to prove that he had demonstrated a right to the hereditaments in questions, noting also that the court lacked jurisdiction in a dispute over dynastic claims of France's former royal family.