Ms. Nguyen is a patent lawyer and counsel in Davis Polk & Wardwell’s Litigation Department, based in the Menlo Park office. She has extensive experience litigating patent infringement and commercial securities cases, with particular focus on disputes involving technology-related issues. Her recent representations include VNUS Medical Technologies in a patent infringement lawsuit pending in the U.S. District Court for the Northern District of California; Comcast in a patent infringement lawsuit involving video-on-demand services; Playtex in a patent infringement lawsuit involving tampons; review of IP issues involving reformulated gasoline related to CNOOC Limited’s attempted acquisition of Unocal Corporation for approximately $18.5 billion; AstraZeneca in numerous litigation related to its pharmaceutical drugs, including In re Tamoxifen Citrate Antitrust Litigation, a multi-district litigation involving the Drug Price Competition and Patent Term Restoration Act (the HatchWaxman Act); and Park v. Merck and Co., Inc., a purported class action lawsuit related to Prilosec, a gastric acid inhibiting drug; numerous technology companies in securities enforcement and internal investigations; an electric company in connection with a state administrative matter; Brown-Forman in a trial in Delaware Chancery court related to its public tender offer; Esso, a subsidiary of Exxon Mobil Corporation, in a trial in the Federal Court of Canada seeking to set aside a judgment in a patent infringement case on the basis of the fraud. In her pro bono practice, Ms. Nguyen has represented The American Sail Training Association in a cancellation proceeding involving several trademark registrations.

She joined Davis Polk in 1995 and became counsel in 2004.

Ms. Nguyen graduated, summa cum laude and as valedictorian, from Franklin & Marshall College (B.A., Chemistry and Economics; pre-med) in 1992 and in 1995 received her J.D., cum laude, from Harvard Law School. She is admitted to the bars of New York and California. She is also admitted to the U.S. Court of Appeals, Federal, Fifth and Ninth Circuits; the U.S. District Courts for the Northern, Southern, Central and Eastern Districts of California; and the U.S. District Courts for the Southern and Eastern Districts of New York.

She is also admitted to practice before the United States Patent and Trademark Office, and has served as vice chair of the ABA International Intellectual Property Rights Committee.  She has published an article in collaboration with scientists at a leading pharmaceutical company. See X.Z. Qin, D.T. Nguyen, and D.P. Ip, Separation of Lisinopril and Its RSS Diastereoisomer by Micellar Electrokinetic Chromatography, J. Chromatogr., 16(17): 3713 (1993).