Efficacious Management Study On The Patent Grand Period

The patent grand period is a system design on weighting the magnitude of the prize to the winner to motivate technology innovation and maximizing social surplus from the view of property right. In recent years, although our Patent Authority is improving on patent law system in order to adapt to the rules of WTO and the Agreement of Trips, the level of patent protection and the patent censor system is not perfect, and should be improved continuously. Patent overstock has already baffled the pace of technology innovation and discouraged the enthusiasm of innovators.In this dissertation, the patent grand period is defined as the period from the date of patent application to the date of patent award, involving constituting patent censer procedure and calculating patent award period. Optimal patent grand period can reach equilibrium between motivating technology innovation and increasing social surplus. Prolonging patent grand period will discourage enthusiasm of applying patent protection, waste duplication of investment and reduce social surplus; shortening patent grand period will weaken level of technology innovation, reducing social surplus in the end. Further more, how to constitute optimal patent grand period should take into account existing patent censor process and the level of patent protection.In this dissertation, a great deal of data was obtained from patent search system, and dealt with Statistic method. Then the writer draws the conclusion that annual change of the patent grand period is U distribution, and sums up thosefactors of effecting patent grand period including patent censor system, patent action of enterprises and patent's economy value. In order to calculate patent grand period, the writer molds a dynamic multi-stage programming with the theories of Technology Innovation, Marketing and Game. On the basis of quantitative analysis the writer has discovered intrinsic relations between the pace of technology innovation and patent property, between cost structure and patent' economy value. This paper is for the reference of Patent Bureau to design patent censor system and make patent strategy for Enterprises.