(1) The principle of national treatment. In terms of industrial property protection, each member state of the Convention must legally treat other member states of the Convention the same as nationals of its own country; even if it is a national of a non-member state, as long as he has a residence in a member state of the Convention, or has a real and effective Industrial and commercial establishments should also be accorded the same treatment as nationals of that country. (2) Priority principle. The Convention stipulates that patent applicants for inventions, utility models and industrial designs may apply within a certain period (12 months for inventions and utility models, and 6 months for industrial designs) from the date of first filing an application with one of the member states. months) to apply to other member states for the same invention, and the date of the first application shall be the date of subsequent applications. (3) Principle of independence. Patent rights obtained for the same invention in different countries have nothing to do with each other, that is, each member state independently grants or refuses, revokes, or terminates the patent right for an invention in accordance with the laws of that country, and is not subject to other member states' handling of the patent right. influence. This means that an invention that has been patented in one member state may not be available in another member state; conversely, a patent application that is rejected in one member state may not be rejected in another member state. (4) Principle of compulsory licensing of patents. The Convention stipulates that each member state may take legislative measures to stipulate that compulsory licenses can be approved under certain conditions to prevent patent holders from possible abuse of patent rights. If a patent is not implemented or fully implemented within a period of four years from the date of application or within three years from the date of approval of the patent (whichever is longer), the relevant member state has the right to Take legislative measures to approve compulsory licenses to allow third parties to exploit the patent. If, two years after the first approval of a compulsory license, the abuses caused by the granting of patent rights cannot be prevented, procedures for revocation of the patent may be initiated. The Convention also stipulates that compulsory licenses shall not be exclusive or transferable; third parties allowed to use the patent must still pay patent royalties to the patentee. (5) Temporary protection of exhibition products. Member states of the Convention shall provide temporary legal protection in accordance with their national laws for patents contained in products exhibited at official or officially recognized international exhibitions held within the territory of each member state of the Convention, with the protection period being the same as the right of priority.