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For the Inventor, By the Inventor

Princeton, NJ, United States of America

Pharmasset, Inc.

Calculating rank
USPTO Granted Patents = 19

% Expired Patents = 63.2



Forward Citations = 962

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32 inventors (with patents filed for the assignee):

goldMedal Junxing Shi (8 out of 23 patents)

silverMedal Kyoichi A Watanabe (8 out of 10 patents)

bronzeMedal Michael J Otto (6 out of 10 patents)

4.  Raymond F Schinazi (4 out of 124 patents)

5.  Peiyuan Wang (3 out of 49 patents)

6.  Lieven Stuyver (3 out of 4 patents)

7.  Jinfa Du (3 out of 34 patents)

8.  Byoung-Kwon Chun (2 out of 28 patents)

9.  Erik Alan Gustafson (2 out of 7 patents)

10.  Joyce D Fingeroth (2 out of 3 patents)

11.  Krystyna Lesiak (2 out of 7 patents)

12.  Krzysztof W Pankiewicz (2 out of 2 patents)

13.  Abel De La Rosa (1 out of 16 patents)

14.  Pasquale N Confalone (1 out of 25 patents)

15.  Michael Joseph Sofia (1 out of 34 patents)


19 patents:

1. 8735345 - Therapeutic composition (2014-05-27),
2. 8114997 - [object Object] (2012-02-14),
3. 8093380 - [object Object] (2012-01-10),
4. 7964580 - Nucleoside phosphoramidate prodrugs (2011-06-21),
5. 7919247 - Simultaneous quantification of nucleic acids in diseased cells (2011-04-05),
6. RE42015 - N4-acylcytosine-1,3-dioxolane nucleosides for treatment of viral infections (2010-12-27),
7. 7772208 - [object Object] (2010-08-10),
8. 7718790 - Kit for assessing mitochondrial toxicity (2010-05-18),
9. 7638502 - Treatment of EBV and KHSV infection and associated abnormal cellular proliferation (2009-12-29),
10. 7601820 - Preparation of alkyl-substituted 2-deoxy-2-fluoro-D-ribofuranosyl pyrimidines and purines and their derivatives (2009-10-13),
11. 7429572 - Modified fluorinated nucleoside analogues (2008-09-30),
12. 7211570 - Treatment of EBV and KHSV infection (2007-05-01),
13. 7094770 - 3'-or 2′-hydroxymethyl substituted nucleoside derivatives for treatment of hepatitis virus infections (2006-08-22),
14. 6949522 - β-2'- or 3′-halonucleosides (2005-09-27),
15. 6927291 - Method for the synthesis of 2',3′-dideoxy-2′,3′-didehydronucleosides (2005-08-09),
Company Overview
Pharmasset, Inc. is a biopharmaceutical company based in Princeton, NJ, specializing in the development of innovative therapies for the treatment of viral infections, particularly hepatitis C. The organization focuses on advancing its proprietary drug candidates through rigorous research and development, leveraging cutting-edge technology to address unmet medical needs. With a commitment to improving patient outcomes, Pharmasset plays a significant role in the evolving landscape of antiviral therapeutics.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Nov 10 2026

19 Patents

#50 in Princeton, NJ

#648 in New Jersey

#17,176 in US

#32,767 in the World

Princeton, NJ (US)
Princeton, NJ, United States of America

Pharmasset, Inc.

Forward Citations = 962

32 inventors:

goldMedal Junxing Shi (8 out of 23 patents)

silverMedal Kyoichi A Watanabe (8 out of 10 patents)

bronzeMedal Michael J Otto (6 out of 10 patents)

4.  Raymond F Schinazi (4 out of 124 patents)

5.  Peiyuan Wang (3 out of 49 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Pharmasset, Inc.. Retrieved from https://idiyas.com/company/pharmasset

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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