9(1)At any time after the expiration of one year from the date of the order by which a person has been declared a mentally incompetent person, or sooner by the leave of the court, an application by Notice of Application may be made by or on behalf of such person to set aside such order, and on such application the court, if satisfied by the evidence submitted that the person has become mentally competent and capable of managing his own affairs, may make an order so declaring; otherwise the court shall by order dismiss the application.