Patent law belongs to intellectual property law in civil law.
The criminal law guarantees the personal and property safety of citizens through criminal punishment.
Civil law is to adjust the relationship between citizens, protect the rights and interests of citizens from infringement, and get relief after infringement.
Administrative law protects citizens' rights by restricting government power.
The constitution mainly protects individual rights by distributing state power and restricting it.
Labor law is the guarantee of citizens' labor rights.
Marriage law stipulates the rights and obligations of citizens in marriage relations.
For example, property rights in civil law, such as cars, are theoretically infinite. As long as the car exists, it will always belong to you, but the intellectual property rights are different, such as invention patents. After the 20-year protection period, it will no longer be a patent and anyone can use it. Furthermore, a patent may be protected by the patent law in China, but in the United States, it may be impossible to obtain a patent because the inventor did not apply for a patent, which is different from the rights of ordinary goods.