先用权抗辩
先用权抗辩-
专利侵权诉讼中的先用权抗辩研究
Research on Prior User Rights Defense in Patent Infringement Lawsuit
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分别比较了现有技术抗辩与先用权抗辩原则、禁止反悔原则以及等同原则的区别，明确了各自的概念，加深了对现有技术抗辩的理解。
The distinctions of prior right defense principle , estoppel principle , doctrine of equivalents and existing technology defense are compared respectively and their concepts are defined , deepening the understanding of existing technology defense .