First, there is no such thing as a world patent. Only international applications do not constitute legal effect. They can only be effective when entering the national phase. Moreover, it usually takes 30 months from application to entering the national phase. The replacement of electronic products is relatively fast. When it enters the national stage, it is estimated that the products will be delisted
Secondly, high imitation machines do not pose a threat, so there is no need to sue, and the cost of prosecution is not low. , and that kind of small garbage factory will not have much money even if it goes bankrupt. Generally, large companies are sued. For example, Oracle sued Google two thousand years ago, and the compensation amount was more than one billion in one go.
P. Third, China is basically a country that does not follow the law. Piracy is everywhere. Intellectual property rights are nothing but shit in China.