Doctrine of equivalents as the basic principle of patent infringement cases interest trade-off, is the foundation of whether the patent infringement.Doctrine of equivalents development for more than ten years in China , but like the United States,has a tendency to die out.Compare the trajectory of China and the United States, explore decided Doctrine of equivalents in the two countries more than ten years of experience and more than hundred years but have similar trajectory of the deciding factor-the balance of the individual interests and social public interests, Doctrine of equivalents in China should develop in a direction that more on the patentee private right protection, not dying.%等同原则作为专利侵权案件利益取舍的基本原则,可为整个专利侵权判定大厦的梁柱.等同原则在中国发展十余年,却与美国有着类似的去存之忧.纵观二者的发展轨迹,探究决定等同原则在两国分别经历百余年和十余年但却有着近似发展轨迹的决定因素--个体利益的与社会公共利益的法益平衡,等同原则在中国应当朝着更加侧重专利权人私权保护的方向发展,不宜走向消亡.
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