What is an international patent application?

an international patent application refers to a patent application filed by an applicant with the patent authority of a contracting state according to the prescribed procedures when an invention-creation is granted patent protection in the contracting state of the Patent Cooperation Treaty (PCT). What is an international patent application? The explanation of the above sentence is as follows: First of all, there is no international patent, and the exact name should be an international patent application. Secondly, the meaning of the above sentence is that when a national of a State Party to the Patent Cooperation Treaty (PCT) wants to apply for patent protection for a certain technology in one or more of the States Parties to the Patent Cooperation Treaty (PCT), he can submit the application documents in the specified language to the accepting unit or the International Bureau specified in the Patent Cooperation Treaty according to the procedures specified in the PCT, and this submission procedure is deemed to have been completed. The Patent Office in China National Intellectual Property Administration, China is the accepting unit for the formulation of this treaty, and Chinese is also the language designated by this treaty. Therefore, China people can submit international patent applications in China National Intellectual Property Administration, China in Chinese. Which countries and languages are designated, you need to pay attention to the latest designated list at any time. In the past, in order to obtain patent protection in several countries, it was necessary to apply for patents from each country one by one, and the procedures and formalities were very cumbersome. In order to solve this problem, the United States, Britain, France, Germany, Japan and other countries held a diplomatic conference in Washington, USA on June 19, 197, and signed the Patent Cooperation Treaty. As of May this year, its member countries have reached 114. In other words, an international application submitted by the applicant is valid in all 114 countries. The purpose of PCT is to strengthen the legal protection of inventions and promote international scientific and technological progress and economic development by simplifying the procedures and procedures of international patent application. It should be noted that this procedure only simplifies the application stage, but does not include the review and authorization stage. In other words, it is wrong for some people to establish the concept of international patent and get patent protection in all countries as long as they submit an application once. International application is divided into two stages: international and domestic. The international stage includes the acceptance, disclosure, retrieval and preliminary examination of international applications. The domestic stage mainly includes the examination of international application authorization by designated countries or selected countries and the handling of other related affairs.