1. Is the patent application nationwide or universal? You applied for a patent in China, but it was infringed in the United States. Is this illegal? Supplement:

Question 1, you invented a thing in China, but if you only applied for a patent in China, foreigners are not allowed to manufacture and sell it in China, but they can manufacture and sell it abroad.

Question 2: It is ok for foreigners to manufacture and sell abroad, without infringement. However, if he comes to China to manufacture and sell, it will be an infringement and he can sue.

Question 3: There is no such patent, but there is an international application for pct patent. Even for pct applications, different countries must be entered later.