Abstract: [TECHNICAL PROBLEM] An evaluation score and information of a group of applications and patents mutually related with each other to constitute a patent portfolio are visualized so that an effective value evaluation is realized. [SOLUTION] A patent portfolio management system, comprising: a patent value calculation unit that calculates a value score of an individual application stored in the patent information storage unit; an annual fee payable amount calculation unit that calculates a patent annual fee payable amount for a reference year of the subject application for the evaluation based on the annual fee table stored in the annual fee information storage unit; a graphics generation device that generates a patent portfolio management screen inclusive of a preliminarily determined diagram or a preliminarily determined table; and a display device that displays the patent portfolio management screen generated by the graphics generation device.