Nagashima Ohno & Tsunematsu | View firm profile
NEW JUDGMENTS – Principle of Territoriality and Infringement of Japanese Patent Rights regarding “Network-Related Inventions”
1. Summary
The Supreme Court of Japan rendered two unprecedented judgments on March 3, 2025, addressing the application of the principle of territoriality of patents to cross-border activities.
In short, the Supreme Court ruled for the first time in its history that cross-border activities, including the use of servers located outside Japan, can constitute the “implementation” of a patented invention and therefore an infringement of a Japanese patent right.
In this newsletter, we explain these judgments and provide our summary commentary on them.
View original article here.
[Authors]
| Kenji Tosaki (Partner) |
| Takahiro Hatori |
| Nozomi Kato |