Sona De

Practice Areas

SONA DE is a nationally recognized trial lawyer with over 25 years of experience advocating for clients in intellectual property cases. She has represented companies across a range of technology sectors, with a focus on life sciences litigation in the pharmaceutical, biologic, biotech, medical device, med-tech, crop science, agribusiness, and chemical fields. Sona has led numerous victories in both bench and jury trials through appeal. She has also argued before the Federal Circuit Court of Appeals and the Multidistrict Litigation Panel, represented clients in arbitration, and defended witnesses overseas under the Hague Convention. Her work is well recognized and has been widely reported in the press.

Three of her cases have been named by LMG Life Sciences as Impact Case of the year: Amgen v. Sandoz (2020 “Impact Case of the Year”); Bayer v. Baxalta (2019 “Patent Impact Case of the Year”); and Purdue v. Sandoz (2013 “Hatch-Waxman Impact Case of the Year”). The Bayer v Baxalta victory was more recently inducted into The National Law Journal’s “Verdicts Hall of Fame.” Sona was featured as a “Litigator of the Week” by The American Lawyer and recognized by the Financial Times for her role in the landmark Therasense case that created a new legal standard for the inequitable conduct defense. Therasense has been named as one of the top 10 patent decisions of this decade by Law360.

Sona is also recommended by The Legal 500 US (Healthcare: Life Sciences); is recognized for her patent litigation work by the IAM Patent 1000 (2017-2022); is ranked among “The Top Women Attorneys in the New York Metro Area”; was shortlisted for LMG Life Sciences’ 2017 “General Patent Litigator of the Year” in New York; is recognized in the 2019-2022 LMG Life Sciences guides for Patent Litigation; and has received In Motion’s “Commitment to Justice Award."