Abstract:The patent evaluation system of universities is an important means to carry out hierarchical management of patents, to promote the transformation of potential patents, and to improve scientific and technological innovation. Based on entropy weight theory, this paper selects 15 patent quality evaluation indexes which are suitable for the patent situation of Chinese universities from three dimensions, technology, legality and applicant subject. Therefore, the weight calculation model of entropy weight method is proposed. Meanwhile, this paper makes an empirical study on patent applications filed by 17 universities in 2011, 2015 and 2019, achieved an objective and systematic assessment. Weight evolution of patent quality indicators are analyzed, and based on the time axis and the horizontal score comparison between universities, draws conclusions on the improvement of the overall patent quality of universities and the differentiation of target universities" patents. The evaluation system can provide data support and train of thoughts for university patent grading management, operations and other intellectual property rights work.