In the modem society where the competitiveness among countries is getting fiercer day by day, it cannot be too much to emphasize the importance of technology development, patent management, and the commercialization of patented technologies, etc. The previous studies have shown that intellectual properties including patents have great impacts on the raise of national competitiveness. Quantitative growth in patents is the necessary but not the enough condition for the national wealth based on the high-valued patented technologies as future assets. In this context, it is needed to activate the effective patent management system and the comprehensive commercialization. The purpose of this Study is to look at the "trust" as a vehicle for the effective patent management. The first chapter is the introduction of this Study. In the second chapter, this Study reviews the patent management in general. The activities of patent management include the education on patents and the raise of awareness, the disclosure of inventions and the management of patent applications, the management of patent prosecutions(e.g. from patent applications to registrations), the management after the registration, and the management of the patent information. There are several kinds of methods used for the patent management. One of them is the so-called outsourcing. And the trust might be considered to belong to the category of the outsourcing. The Chapter Ⅲ provides the overview of the trust. A trust is the legal relationship created when a person known as the "settlor" places assets under the control of a person, or transfers assets to a person who is called the "trustee", for the benefit of some other people known as the "beneficiary" or for a specific purpose. Since the revision of the Trust Business Act in 2005, the intellectual property can be the objects of the trust. The patent management trust is introduced as a way to manage patent effectively in the fourth chapter.