Construction and development of intermediary service system for intellectual property Construction and development of internet services system for intellectual property Innovation and development of library service system in the era of big data Construction of legal protection system for the virtual property 并列题名:Innovation and development of library service system in the era of big data Research on development of the Chinese intellectual property law 并列题名:Study on the obligations of internet intermediaries under the system of intellectual property rights Study on the obligations of internet intermediaries under the system of intellectual property rights Construction and demonstration of innovative after-sales service system for medical device