Tung-On Kong

Specialty / focus areas. Tung-On ("T.O.") Kong is a partner in the litigation department of Wilson Sonsini Goodrich & Rosati's San Francisco office. His practice centers on patent infringement litigation, with a particular emphasis on representing generic pharmaceutical companies in Hatch-Waxman Act / Paragraph IV (ANDA) disputes. Per his AIPLA speaker biography, he has also handled patent and complex commercial cases involving semiconductor products and wireless communication devices, and has trial experience in Delaware, New Jersey, the Southern and Eastern Districts of New York, Northern Illinois, Western Wisconsin, Eastern Texas, and Central and Northern California. He has spoken at national conferences on Paragraph IV topics including at-risk launches and preliminary injunctions.

Side preference and firm context. The tracked docket shows a single defendant-side appearance (1 of 1), consistent with his published focus on defending generic pharmaceutical manufacturers against branded-company patent suits. In the tracked matter, Novartis Pharmaceuticals Corp. v. Apotex Inc., he appeared as pro hac vice counsel for defendant Apotex. He has been with Wilson Sonsini since at least 2011, when a trade-press item noted his patent litigation practice there; no reliably sourced prior-firm history was found.

PTAB / IPR experience. I found no public evidence that Kong appears regularly in IPR/PGR proceedings; his documented work is district-court Hatch-Waxman litigation. Wilson Sonsini's broader IP practice is active before the PTAB, but that work is not attributed to him in the sources reviewed.

Bar / education. California State Bar (admitted December 1999, No. 205871); J.D., Tulane University School of Law (1999). Outcome details of the tracked Novartis/Apotex case could not be independently verified from the sources available.