Is patent registration valid globally?

No, patents are regional. If an ordinary patent application is filed in the Intellectual Property Office (Patent Office) in China, it will only be valid in China (that is, any company infringing in China can be sued in China, but the object includes domestic or foreign companies). Generally speaking, the patent department of the government decides whether to approve the registration of a patent application.

legal ground

Article 40 of the patent law

If the application for a patent for utility model or design is not found rejected after preliminary examination, the administrative department for patent in the State Council shall make a decision to grant the patent right for utility model or design, issue the corresponding patent certificate, and register and announce it at the same time. The patent right for utility model and the patent right for design shall take effect as of the date of announcement.