With 156 patents published between 2002 and 2022, Pfizer Inc holds the most number of patents in the Chemicals sector in Estonia, of which 43.6% was contributed by its subsidiary Pfizer Products Inc..
The second largest number of patents were published by AstraZeneca Plc with 97 related patents, of which 95.9% was contributed by its subsidiary AstraZeneca AB. The third largest number of patents were published by Johnson & Johnson with 83 related patents, of which 85.5% was contributed by its subsidiary Janssen Pharmaceutica NV. The fourth largest number of patents were published by Sanofi with 72 related patents, of which 58.3% was contributed by its subsidiary Aventis Pharma SA. The fifth largest number of patents were published by Bayer AG with 51 related patents.
The top five patent holders, i.e., Pfizer Inc, AstraZeneca Plc, Johnson & Johnson, Sanofi, and Bayer AG, together held 459 patents during the period.
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