With 227 patents published between 2002 and 2022, Pfizer Inc holds the most number of patents in the Oil & Gas sector in Slovakia, of which 35.7% was contributed by its subsidiary Pfizer Products Inc..
The second largest number of patents were published by Sanofi with 108 related patents, of which 33.3% was contributed by its subsidiary Aventis Pharma SA. The third largest number of patents were published by AstraZeneca Plc with 103 related patents, of which 85.4% was contributed by its subsidiary AstraZeneca AB. The fourth largest number of patents were published by Johnson & Johnson with 91 related patents, of which 71.4% was contributed by its subsidiary Janssen Pharmaceutica NV. The fifth largest number of patents were published by E. Merck KG with 90 related patents, of which 75.6% was contributed by its subsidiary Merck Patent GmbH.
The top five patent holders, i.e., Pfizer Inc, Sanofi, AstraZeneca Plc, Johnson & Johnson, and E. Merck KG, together held 619 patents during the period.
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