In the fourth part we will discuss the main opinion on the accredited standard of prior art defense and doctrine of equivalent in our country.
争议与分歧意见部分主要讨论目前国内存在的公知技术抗辩认定标准和等同原则的认定标准的主要观点。
参考来源 - 公知技术抗辩在专利侵权案件中的适用In the judicial practice, the prior art counterplead also early had the suitable case.
司法实践中,公知技术抗辩也早有适用的案例。
参考来源 - 论公知技术抗辩原则（研究生论文）This chapter also involves the rules for TCM product patent,where the author mainly discussed the identity principle and the application of plea in technology in public domain.
本章进一步论述了以方法定义的中药产品类型专利侵权判定规则。 重点讨论了等同原则和公知技术抗辩规则的适用。
参考来源 - 药品专利侵权判定规则研究Under this kind of condition , the counterplea means like defense of a publicly known technology would be a good way。 Finally, the paper make comparison between defense of a publicly known technology and other ways.
最后将公知技术抗辩与其他专利侵权抗辩方式作了比较。
参考来源 - 公知技术抗辩在我国制药业开发保护中的运用研究·2,447,543篇论文数据，部分数据来源于NoteExpress
第二部分是公知技术抗辩原则与其他相关原则的比较。
Second, comparing the principle of the prior art and other correlative principles.
最后，笔者对我国的公知技术抗辩制度提出了自己的一些建议。
Finally, the author puts forward his own proposals to our country's prior art counterplead system.
同时根据诚信和公平原则，应适用禁止反悔和公知技术抗辩作为排除规则。
Meanwhile, in accordance with the principle of honesty and fairness, the doctrine of prosecution history estoppels and plea known technology shall be taken as the exclusion principle.
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