What system do countries in the world generally adopt in intellectual property law enforcement?

Patent system, trademark system and copyright system. There are mainly three kinds of intellectual property protection systems in the world, namely, patent system, trademark system and copyright system, among which the patent system is the most important one, and the enforcement of intellectual property rights generally adopts patent system, trademark system and copyright system. Intellectual property refers to the rights enjoyed by citizens and legal persons in the fields of science and technology, culture and art according to law. Including copyright, patent right, trademark right and so on.