With the analysis among 150 patents, we discovered top 30 key players by total patent application. Merck & Co., Inc., Glaxo Group Ltd., Schering AG are dominant in this area. They take 42.67% of the total patent filing.
New Jersey, United States
Patent: 36
Hounslow, United Kingdom
Patent: 17
Berlin, Germany
Patent: 11
Valais, Switzerland
Patent: 9
Castilla y León, Spain
Patent: 8
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