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.

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等同原则是专利侵权判定中的一个重要原则。

The doctrine of equivalents is an important principle in patent infringement verdict.

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因此，等同原则已经成为了国际上公认的一种判定专利侵权的重要原则。

So, the doctrine of equivalents has become an international principle on judging the infringement of patent.

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