The behavior of "patent trolls" in operating patents is a market behavior, and the government should not interfere too much. However, just like any business operation, when it has an adverse impact on social welfare as a whole or public interests, the government has the responsibility to intervene, especially when "patent trolls" operate on patent rights. When the government is empowered, government supervision becomes even more important. In fact, government attention and intervention against "patent trolls" not only occur in the United States, but also in Europe. For example, the EU has had many antitrust or unfair competition lawsuits involving the patent practices of “patent trolls” (such as Nokia v. German “patent troll” company IPCom, Google v. Nokia, Microsoft and Canadian “patent troll” company Masaid, etc.). However, it should be noted that government supervision needs to grasp two important aspects: timing and degree. When and where intervention is needed, how and to what extent intervention is required. Otherwise, government actions will disrupt normal market behavior and may not only It is not conducive to social, economic and technological development, and may also have counterproductive effects.