In the modern global business environment, protecting intellectual property rights is crucial for maintaining a company’s competitive edge. This is especially true in the IT sector, where technological innovation is rapid, and patent infringement issues arise frequently. Companies must understand the concept of patent rights and their scope of application to properly protect their own technology and ideas, thereby securing a competitive advantage.<\/p>\n\n\n\n
On March 3, Reiwa 7 (2025), the Supreme Court of Japan drew significant attention when it ruled that Japanese patent rights protection extends to infringement acts by FC2, which hosts its servers in the United States, in the lawsuit between Dwango and FC2.<\/p>\n\n\n\n
This article will provide a detailed explanation of the basic concepts of patent infringement, the principle of territoriality, and the case study of the lawsuit between Dwango and FC2. It will also explore how companies should protect their patent rights under Japanese law.<\/p>\n\n\n\n