In today's society where science and technology are undergoing rapid development,and enterprises competing each other primarily with advanced technologies in which they enjoy their own intellectual property right,a major part of an enterprise's business activities is that patented technolo- gy and technical secret(or known-how)are taken as goods of technical trade and that R&D of hi-tech achievements are undertaken by way of conclusion of contracts.It is worth at- taching importance to how to ensure the legitimacy and va- In today's society where science and technology are undergoing rapid development, and enterprises competing each other with with advanced technologies in which they enjoy their own intellectual property right, a major part of an enterprise's business activities is that patented technolo- gy and technical secret (or known-how) are taken as goods of technical trade and that R & D of hi-tech achievements are undertaken by way of conclusion of contracts. It is worth at- taching importance to how to ensure the legitimacy and va-