To grasp information on the right related persons about the property right and contents, and to enable all of the right related persons to efficiently negotiate with each other.
A representative terminal 3A gains access to a server 5 according to a request from a representative copyright related person, and inputs writing information on writing and copyright related person information including negotiation presenting information to a low-ranking copyright related person to the server 5. The server 5 extracts information including at least the negotiation presenting information from the writing information and the copyright related person information, generates a Web page carrying the extracted information, provides the same and receives a reply. The server 5 forces the copyright related person to negotiate on the contract in a designated negotiation method when a denial reply is input, and receives input of approval reply and contents of the contract at the end of contract negotiation when the contract negotiation is ended. The server 5 discriminates the input end of the approval reply when the approval reply is obtained, and enters the acquisition of approval reply in the input end.
KATO HARUHIKO
KATO YUKA
KITAGAWA ZENTARO
KITAGAWA ZENTARO