{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,6]],"date-time":"2025-11-06T15:53:30Z","timestamp":1762444410742,"version":"build-2065373602"},"reference-count":28,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2013,10,28]],"date-time":"2013-10-28T00:00:00Z","timestamp":1382918400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Information"],"abstract":"<jats:p>The patent cooperation network which enterprises join is a very important network platform for enterprises\u2019 open innovation. However, very limited work has been done to empirically investigate the dynamic change process of the network in China. To address this issue, this paper analyzes dynamic change process of cooperation network of enterprises and the small-world effect of the biggest subgroup according to the data of 36731 items of cooperative patents between enterprises from 1985 to 2010 published by the State Intellectual Property Office of China. A conclusion can be drawn from the analysis results that the biggest subgroup has the characteristics of small-world effect, but the overall network structure also has some defects, which limit the development of open innovation. For the first time, suggestions on open innovation strategies are put forward to provide theoretical reference for both the government and enterprises.<\/jats:p>","DOI":"10.3390\/info4040398","type":"journal-article","created":{"date-parts":[[2013,10,28]],"date-time":"2013-10-28T12:00:27Z","timestamp":1382961627000},"page":"398-410","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Empirical Analysis on Evolution and Small World Effect of Chinese Enterprise-Enterprise Patent Cooperation Network: From the Perspective of Open Innovation"],"prefix":"10.3390","volume":"4","author":[{"given":"Chunxia","family":"Ye","sequence":"first","affiliation":[{"name":"School of Management, Huazhong University of Science and Technology, Wuhan 430074, China"}]},{"given":"Xiang","family":"Yu","sequence":"additional","affiliation":[{"name":"School of Management, Huazhong University of Science and Technology, Wuhan 430074, China"}]},{"given":"Wei","family":"Li","sequence":"additional","affiliation":[{"name":"Wenzhou Entry-Exit Inspection and Quarantine Bureau of China, Wenzhou 325003, China"}]}],"member":"1968","published-online":{"date-parts":[[2013,10,28]]},"reference":[{"key":"ref_1","first-page":"35","article-title":"The era of open innovation","volume":"44","author":"Chesbrough","year":"2003","journal-title":"MIT Sloan Manag. 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