Value Development Of Expired Patent

Now in the more than 40 million patents, most of them are expired ones except the 4.8 million valid ones. The expired patents won't be protected by patent law. The State Intellectual Property Bureau estimated: by the end of 2004, The total amount of the invalid patents and application for expired patents already exceeded more than 390,000 in our country, which has reached 31% of the total amount of the State Intellectual Property Bureau has processed. And the number is also increasing progressively at the speed about 10% every year, It can't be looked down upon.From the legal angle ,The invalid patents have already lost the national legal protection, that is to say, the patent fail to obtain the protections of patent law, people can use gratuitously, However, this patent has not lost value , it is still the useful and can give economic benefits. From the technological angle, it is a result of people's technological innovation and still has certain using value, It is the crystallization of scientific worker's hard-working in the whole world, and is our important technological information source too, If does not be developed and utilized, it will flood in vast information ocean and be wasted. The development and utilization of invalid patents, playing its important role should get people's enough attention. In implementing "prosper the nation with science and education"and technological innovation activity, the invalid patent is a land of important information resources demanding developing urgently, as energy resource and physical resources , before development, we must evaluate and ensure the developmental value through effective appraisal technologies and means. Thus we can know the meanings of development and draw the conclusion of whether it will be developed. Practice has proved that invalid patents has played important role in regulating, improving raising the function and result of educational, scientific and research activities. However, people generally have mistaken ideas to this, think since invalid patent has already expired, There is not usable value, therefore " put it at one's side", let it" run its course", which have caused seriously waste.This article mainly researched the forming reasons of invalid patents, the evaluate approach ,the value developmental, use and managerial methods and do some preliminary tries of value development and use in educational, scientific and industrial departments.