论专利侵权判定中的禁止反悔原则

禁止反悔原则是限制专利保护范围不合理扩张的一种重要手段，其实质在于防止专利权人采取出尔反尔的伎俩，先在专利授权或维持程序中为了满足有关法律要求而对专利保护范围进行限制，后在侵权诉讼时又企图取消先前所作限制、扩大专利保护范围，从而两头得利，

On the Principle of Estoppel in the determination of Patent Infringement

The principle of estoppel is an important means to confine the irrational expansion of patent protection scope. In essence,it helps to prevent the patent holder from promising and then denying in succession since the patent holder will first confine the scope of patent protection to meet the requirement of relevant laws and then in patent infringement lawsuits he will deny such confinements and expand the scope of patent protection. In this way,the patent holder can gain benefits from both sides.