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Reference.org
Patent war
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<p>A patent war is a "battle" between corporations or individuals to secure <a href="/facts/Patents/LjT2bG3A">patents</a> for litigation, whether offensively or defensively. There are ongoing patent wars between the world's largest technology and software corporations. Contemporary patent wars are a global phenomenon, fought by multinational corporations based in the United States, China, Europe, Japan, Korea and Taiwan. Patent wars have occurred in a wide range of technologies, both in the past and in the present. </p>