The Application Of Doctrine Of Equivalent In Judgment Of Patent Infringement

Doctrine of equivalent is an important standard in judgment of patent infringement, it comes from United States. As the development of science, many countries start to use the doctrine. The aim of using Doctrine of equivalent is to escape liability though changing a little technology that is not essential. Doctrine of equivalent becomes the main way of judgment of patent infringement. But it is very difficult to use the doctrine because of it's own characteristic. We have used Doctrine of equivalent in justice practice.This thesis focus on the necessity of developing the Doctrine of equivalent & the development of the patent litigation, it compares with the difference in the doctrine of equivalent's application standard between different countries. At the same time, it deals with the some problems on the process of making decision of the equivalent violation & the limitation in the doctrine of equivalent. it also gives us some pieces of...