With the analysis among 135 patents, we discovered top 24 key players by total patent application. Richter Gedeon Nyrt, Bayer Schering Pharma AG, Grünenthal GmbH are dominant in this area. They take 43.70% of the total patent filing.
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Patent: 26
Berlin, Germany
Patent: 19
Nordrhein-Westfalen, Germany
Patent: 14
Nordrhein-Westfalen, Germany
Patent: 11
Jiangsu Sheng, China
Patent: 9
Thüringen, Germany
Patent: 8
Indiana, United States
Patent: 3
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