摘要：专利申请能够从一定程度上反映领域中的前沿技术，本文对PD-1 靶点专利的相关情况进行多角度、多层次的分析，以及国内制药企业的药物研发热点，揭示该领域的技术热点和竞争格局，旨在为我国制药企业及科研人员提供一定参考。

    关键词：PD-1；抗肿瘤药物；专利分析

    Abstract：Patent application can reflect to some extent in the field of cutting-edge technology， this paper targets for PD - 1 patent related cases a multi-angle and multi-level analysis， as well as drug development focus in the domestic pharmaceutical companies， revealing technology in the field of the hot spots and the competitive landscape ......