采用开放式权利要求的撰写方式是专利申请人为了获得尽可能宽的保护范围在撰写专利申请时较常见的一种做法。例如,在撰写权利要求书时,申请人经常通过说明书记载的一个或者多个实施例来概括权利要求的技术方案;对于用物理或化学参数限定的技术特徵而言,则主要体现在利用开放式的数值范围而非封闭式的确定的数值进行限定。这种撰写方式是否恰当,何种程度的数值扩展可以得到说明书的支持从而得到专利 It is a common practice for patent applicants to write patent applications in order to obtain the widest possible scope of protection by adopting an open claim. For example, in writing the claims, the applicant often summarizes the technical solutions of the claims by one or more of the embodiments described in the specification. For the technical features defined by the physical or chemical parameters, it is mainly embodied in the open-ended But not the enclosed numerical value. This writing is appropriate, to what extent the numerical expansion can get the support of the manual to get the patent