Research on the legal issues of property rights Research on the legal issues of surrogacy regulation Research on the legal protection of patients' rights Research on the nature of the firm property rights 并列题名:Research on the legal issues of surrogacy regulation 并列题名:Research on the legal protection of patients' rights Research on secured property rights Research on strategy of intellectual property rights Research on the theory of the intangible property rights 并列题名:Research on the nature of the firm property rights