Jessica Chao

Jessica Chao assists the firm in pharmaceutical patent prosecution matters, including application drafting, U.S. and foreign patent prosecution and clearance, and patentability studies. She has extensive knowledge in the areas of organic chemistry and medicinal chemistry.

Recent Posts

PTAB Says Yes to (Pro)Drugs

Posted by Jessica Chao on Dec 18, 2017

Jessica Chao

Prodrugs are inactive compounds designed to be converted into pharmaceutically active metabolites following delivery to a patient. Prodrugs have important pharmacokinetic advantages over traditional compounds, and a recent PTAB decision, Lupin Limited v. Vertex Pharmaceuticals Inc. (IPR2016-00558), illustrates how prodrugs can possess patent advantages as well. In its analysis of obviousness, the PTAB focuses on unpredictable results and whether a person of ordinary skill in the art has a reasonable expectation of success in view of the available art, as outlined in Procter & Gamble Co. v. Teva Pharm. USA, Inc., 566 F.3d 989 (Fed. Cir. 2009), frequently applied in pharmaceutical cases.

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Topics: BioPharma, Obviousness

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