(1) Exclusivity. It means that patent right is an intangible property right with exclusive nature. Anyone who wants to implement the patent must obtain the permission of the patentee and pay royalties according to the agreement between the parties, otherwise it will constitute infringement, unless otherwise provided by law. (2) Temporality. It means that the patent right is only valid within the authorization period. After the expiration or termination of the period, the invention becomes the common wealth of the whole society and anyone can freely use it. The term of the patent right is stipulated by the patent law. (3) Regionality. It means that the patent rights granted by one country are only valid within the scope of the granting country or region and have no legal binding force on other countries or regions. The effectiveness of the patent rights granted by each country or region is independent of each other.