In other words, unless countersigned by the Minister of State, the law was invalid and, further, while it was formally possible for the emperor to refuse to give sanction, it was practically impossible for him to do so.
つまり、大臣副署がなければその法律は無効であり、さらに天皇が裁可を拒むことは形式上可能であっても、事実上は不可能であった。