

Susan E. Foster
- Seattle
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For more than 35 years, Susan has guided clients in high-stakes matters.
Susan Foster counsels on and litigates antitrust and trade regulation matters, as well as intellectual property and other business and financial disputes. She advises clients on a range of antitrust and marketing issues including distribution counseling, advertising and promotions, strategic alliances, and Hart-Scott-Rodino premerger notification matters.
Her clients include leaders in technology and aerospace.
Education & Credentials
Education
- Seattle University School of Law, J.D., magna cum laude, Lead Articles Editor, Puget Sound Law Review, 1987 - 1988, 1988
- Pacific Lutheran University, B.A., Legal Studies, 1984
Bar and Court Admissions
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Washington
- U.S. Court of Appeals for the Tenth Circuit
- U.S. District Court for the Eastern District of Michigan
- U.S. District Court for the Eastern District of Washington
- U.S. District Court for the Western District of Washington
Professional Recognition
Listed in Chambers USA as "America's Leading Lawyers" in Antitrust, 2022-2024
Named Best Lawyers’ Seattle "Antitrust Law Lawyer of the Year," 2014, 2018, 2020, 2023; "Trade Secrets Law Lawyer of the Year," 2025
Listed in Best Lawyers in America: Antitrust Law; Commercial Litigation; Litigation - Antitrust; Litigation - Intellectual Property, 2018-2025; Trade Secrets, 2023-2025
Listed in Marquis Who's Who in American Law, Who's Who in the World, Who's Who in America and Who's Who in American Women
King County Bar Volunteer of the Month, September 2002
Impact
Professional Leadership
- Perkins Coie Audit Committee, Chair, January 2004-2008
- Perkins Coie Executive Committee, Member, 2005-2008
- Hate Free Zone, Advisory Board, 2002-2003
- Washington State Bar Association; Consumer Protection, Antitrust and Unfair Business Practice Section, Executive Committee, 1994-2003, Chair, 2000-2001
- Pacific Northwest Ballet, Board of Trustees, 1997-2002
- American Bar Association; Antitrust Section; Litigation Section - Business Torts Co-Chair Pacific Northwest Division, 1996-2001
- Corporate Council for the Arts, Associates Program, 1993-1996