Z:gnu-www-ja-gpl-faq--2421ff-Do not take this to mean that/en

Do not take this to mean that you can threaten the community with your patents. In many countries, distributing software under GPLv2 provides recipients with an implicit patent license to exercise their rights under the GPL. Even if it didn't, anyone considering enforcing their patents aggressively is an enemy of the community, and we will defend ourselves against such an attack.