1School of Economics and Law, Chaohu University, Hefei 238000, China 2School of Economics and Management, Nanjing University of Science & Technology, Nanjing 210094, China;
[Objective] The paper systematically reviews current studies on patent networks, and then summaries research questions and developing trends.[Coverage] We used “Patent Network” as search terms for the Web of Science and CNKI core journal databases, respectively. A total of 465 English papers and 196 Chinese papers were retrieved by removing the duplicated and irrelevant ones. Our final list included 106 representative articles on topic labeling.[Methods] Firstly, we used the community discovery algorithm to explore topics of the keyword co-occurrence network. Then, we extracted research topics of these Chinese and English papers to identify research trends. Finally,we reviewed papers with the highest numbers of citations from each trending topics.[Results] The construction methods of patent networks include cooperation, reference, technology transfer and technology similarity, etc. The popular research methods include social network analysis, complex network and text mining, etc.[Limitations] We only studied the representative literature, more research is needed to expand our analysis to all research topics.[Conclusions] The patent network analysis is emerging. Research on the evolution mechanism, model and simulation experiment of patent networks needs to be strengthened. More and more researchers focus on semantic analysis tendency of patent network, as well as the construction of patent comprehensive network.
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