Abstract:【Purpose/significance】With the development of the new form of intellectual property service in the economic environment of the network platform, improving the evaluating accuracy and pricing rationality of its service value are beneficial to release the potential of the network platform service transaction. The paper focuses on the evaluation of patent value in the platform trading, and provides a reference for the future theoretical research in this field, and has a certain practical significance for the improvement of China''s intellectual property network platform service ecosystem. 【Method/process】By means of literature measurement, social network analysis, comparative analysis, summary and so on, the relevant literatures at home and abroad of patent value evaluation are reviewed, and the research hotspots in this field are clearly defined and analyzed respectively. 【Result/conclusion】(1)The research hotspots in the field of patent value evaluation focuses on three aspects, which are the connotation of patent value, the evaluation index system of patent value and the evaluation method of patent value;(2)The views of the connotation of patent value are divided into narrow and broad sense;(3)The research perspective of the evaluation index system of patent value is developed from single dimension to multi dimension; (4) The method of patent valuation includes three major categories, and its research presents the characteristics of keeping pace with the times;(5)To explore the accurate evaluation method of patent value, to construct the patent value evaluation system based on industry characteristics and to develop an intelligent system for the evaluation of patent value are the future research directions in this field.