An idea provider makes a NDA at a contracting unit after connecting a provider terminal to an idea managing apparatus and stores the idea in an idea file. On the other hand, an idea user makes an NDA at the contracting unit after connecting a user terminal to the idea managing apparatus and searches for an idea to be implemented in the idea file at a searching unit. The search result is output onto a display at the user terminal. Thus, the idea managing apparatus can advertise for a company which desires to implement the self-created idea not protected by right while maintaining the novelty of the idea.
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