Analysis of the new and difficult problems in the adminlstration of intellectual property Analysis of the new and difficult problems in the administration of intellectual property Research on the credit and punishment systems in the field of intellectual property On legitimacy of the methods of private investigation for intellectual property Legal questions in the valuation of intellectual property 并列题名：Research on the credit and punishment systems in the field of intellectual property 并列题名：Research on difficult problems in the cases of crimes of infringing intellectual property rights