The invalidation of a patent right means that from the date when the State Intellectual Property Office announces the grant of a patent right, any unit or individual that believes that the grant of the patent right does not comply with the provisions of the patent law may request the Patent Reexamination Board to declare the patent right invalid. A system that invalidates patent rights. The establishment of my country's patent invalidation system is to correct the State Intellectual Property Office's erroneous decision to grant patent rights to inventions that do not meet the conditions stipulated in the patent law and to maintain the fairness of patent rights granting.