A Method for Calculating Patent Similarity Using Patent Model Tree Based on Neural Network

  • Chunyan Ma
  • Tong ZhaoEmail author
  • Hao Li
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10989)


To make full use of patent information and help companies find similar patent pairs by calculating the similarity of patents, help them deal with the issue of patent infringement detection, patent search, enterprise competition analysis, and patent layout, this paper proposes a method for calculation of patent similarity based on patent text using patent model tree. This method not only simplifies the process of understanding the patent text but also increases the accuracy of calculating the similarity among patents effectively. In this paper, the similarity between patents is calculated based on the patent model tree, and different similarity calculation methods are used according to different properties of tree nodes. Among them, in order to improve the accuracy of the claims node similarity measurement results, the Siamese LSTM network is applied. The experimental results show that the patent similarity calculation method based on text has an outstanding accuracy.


Patent similarity Patent text Patent model tree 



The project is supported by HJSW and Research & Development plan of Shaanxi Province (Program No. 2017ZDXM-GY-094, 2015KTZDGY04-01).


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© Springer Nature Switzerland AG 2018

Authors and Affiliations

  1. 1.School of Software and MicroelectronicsNorthwestern Polytechnical UniversityXi’anChina

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