Margaret (Peg) M. Duncan focuses her practice on IP litigation, including patent, trademark and copyright litigation. Peg also focuses her practice on protection of intellectual property, including prosecution, counseling and transactions relating to global patent and trademark portfolios. Peg has represented numerous clients in federal courts and at the US Patent and Trademark Office in a wide variety of technologies and industries, including life sciences, chemical and computer hardware and software technologies, financial services, and food and beverage products.
From 2002 to 2014, Peg served as McDermott’s Chicago IP Practice Group Leader. Prior to joining McDermott in 1992, Peg also served as senior IP counsel for two fortune 100 companies.
Peg currently serves as president-elect of the Richard Linn American Inn of Court and serves on the International Trademark Association (INTA) International/US Amicus Committee. Peg also serves as vice chair of the Amicus Committee of the Intellectual Property Law Association of Chicago (IPLAC), for which she co-authored amicus briefs to the US Supreme Court in Alice Corporation v. CLS Bank International and SCA Hygiene v. First Quality Baby Products. She has been consistently recognized by Chambers USA, Best Lawyers, The Legal 500, IAM 1000, World Trademark Review and Illinois Super Lawyers.
Peg received her JD from Loyola University of Chicago School of Law, a BS in natural sciences from Xavier University and a BS in medical technology from Indiana University. Peg also served as a judicial extern for Chief Judge James B. Parsons in the US District Court for the Northern District of Illinois.