等同原则的出现与适用，为判定专利侵权的成立提供了一套行之有效的方法。
The appearance and application of the equal principle provides a set of effective methods in judging the patent pirate.
本部分重点阐释了在专利侵权诉讼中与公知技术抗辩原则相近的两个法律原则——等同原则和禁止反悔原则。
This part emphasize on expatiating two close legal principle with the prior art principle in the patent tort suit-equal principle and forbidden regretted principle.
本部分主要介绍了等同原则和禁止反悔原则的理论基础和对专利侵权判定的作用。
This part mainly introduces the theoretical foundation of the doctrine of equivalents and estoppels and the effect to patent infringement judging.
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