The first question of patent infringement is the protection scope of the patent rights , . the patent claims should be interpreted eclectically . the second question of patent infringement is the doctrine of equivalent 研究专利侵权首先要研究专利权利的范围，应当以折衷方式解释权利要求的范围，而不是采用较窄的周边限定原则和较宽的中心限定原则。
