1. Agensys, Inc. (26 from 196 patents)

2. Amgen Fremont Inc. (22 from 78 patents)

3. Pfizer Corporation (10 from 4,455 patents)

4. Abgenix, Inc. (4 from 32 patents)

5. Seattle Genetics, Inc. (3 from 132 patents)

6. Abbott Laboratories Corporation (2 from 4,177 patents)

7. Amgen Inc. (2 from 1,970 patents)

8. Cell Genesys, Inc. (1 from 78 patents)

9. Seagen Inc. (1 from 64 patents)

10. Celldex Therapeutics Limited (1 from 45 patents)

11. Curagen Corporation (84 patents)

12. Pfizer Products Inc. (47 patents)

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