Mason Ji
- Seattle
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Mason is a litigator focusing on complex commercial litigation.
Mason Ji represents clients in commercial disputes in federal and state courts across the country. Informed by his international relations background, he also advises clients on international trade matters, such as U.S. sanctions violations and issues involving the Committee on Foreign Investment in the United States (CFIUS).
Clients rely on Mason for his practical guidance and proven experience in achieving favorable and efficient dispute resolutions. He routinely drafts pleadings and motion briefs while overseeing all aspects of discovery. Mason has successfully argued and won multiple dispositive motions and has a strong record of trial success, including a multiweek bench trial and several arbitrations. He recently led a multiday arbitration where his team won on all claims.
Mason is a bilingual English and Chinese speaker and a former English-Chinese translator. He utilizes his fluency in Chinese and understanding of Chinese culture to regularly advise clients on disputes, such as cross-border litigation.
Mason is a former delegate to the U.N. General Assembly, negotiating nuclear disarmament, climate change, and human rights treaties, and a former White House ambassador for Asian Americans and Pacific Islanders. While in law school, Mason was an executive editor for the Harvard International Law Journal.
Education & Credentials
Education
- Harvard Law School, J.D., Executive Editor, Harvard International Law Journal, 2021
- University of Oxford, Master of Public Policy, Rhodes Scholar, 2018
- University of Oxford, M.Sc., Global Governance and Diplomacy, Rhodes Scholar, 2017
- Yale University, B.A., Global Affairs and Political Science, summa cum laude, Phi Beta Kappa, 2016
- Peking University, Certificate, Direct Enrollment, School of International Studies, 2014
Bar and Court Admissions
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Washington
- U.S. District Court for the Western District of Washington
- U.S. District Court for the Eastern District of Washington
- U.S. Court of Appeals for the Ninth Circuit
Related Employment
- University of Washington School of Law, Seattle, WA, Lecturer, 2021-present; Doctoral Committee Member, 2023-present
- Perkins Coie LLP, Seattle, WA, Law Clerk, 2020-2021; Summer Associate, 2019, 2020; 1L Diversity Fellow, 2019
- Global Council for the Sustainable Development Goals, New York, NY, Councilmember, 2018-2021
- United Nations, New York, NY, Consultant, 2018-2020, U.N. General Assembly Delegate, 2013-2015
- Hong Kong International Arbitration Centre, Hong Kong SAR, China, Intern, 2019
- White House, Washington, D.C., Ambassador for Asian Americans and Pacific Islanders, 2015-2016
Additional Languages
- Chinese - Mandarin
Professional Recognition
Awarded the ABA Rosner & Rosner Young Lawyer Professionalism Award, 2025
Recognized by Best Lawyers: Ones to Watch for Criminal Defense: White-Collar, 2024-2026; Commercial Litigation, 2026
American Bar Foundation, Board Director, 2025-present; Fellow, 2024-present
Recognized as one of the 12 lawyers in ABA Journal's annual "Members Who Inspire," 2024
Listed on the "Top 40 Young Lawyers On the Rise" List, American Bar Association, 2023
J. Shan Mullin Annual Community Leadership and Service Award, Perkins Coie, 2022
Listed in Who's Who in America
Impact
Professional Leadership
- Washington State Bar Association Young Lawyers Committee, Chair-Elect, 2023-present; Member, 2023-present
- American Bar Association Young Lawyers Division, District Representative for Washington and Oregon, 2023-present
- King County Bar Association, New Lawyers Division, Trustee, 2022-present
- American Bar Association, United States Mission to the United Nations, Alternate Observer, 2022-present
- Council on Foreign Relations Young Professionals Series, Member
Community Involvement
- Hunger Free America, Associate Board Director, 2023-present
- Friends of Bellevue Cross-Cultural Center, Board Director, 2021-present
- Asian Americans for Justice and Equality, Board Director, 2021-present
- Seattle Chinese Radio, Radio Host of “Decoding America,” 2020-present
Professional Experience
Litigation
Lu Xu v. Southport Office EB-5 LP, et al.
King County Superior Court
Defended Motion to Dismiss against an international investor in an EB-5 investment funds dispute.
David Beail v. Thomas Dwyer, Norma Fine, et al.
Snohomish County Superior Court
Represented LLC member in multi-party LLC dispute, settled claims through mediation.
Confidential Client
King County Superior Court
Represented a seller representative in a reverse merger transaction dispute through a multiweek bench trial.
Michelle v. South Correctional Entity, et al.
U.S. District Court for the Western District of Washington
Defended and helped secure dismissal for healthcare services provider from federal litigation.
Picciano v. NaphCare, Inc., et al.
U.S. District Court for the Western District of Washington
Defending healthcare services provider in litigation in which plaintiff alleges constitutionally deficient medical care and medical negligence.
Tupperware Brands Corporation v. Holland America Line N.V. and Seabourn Cruise Line Limited
King County Superior Court
Assisted in mediation, dispositive motions practice, and settling breach of contract claims against cruise lines.
GVD Commercial Properties, Inc. v. Red Lion Hotels Corporation
Spokane County Superior Court
Defended and settled breach of contract claims against hotel tenant through mediation.
White Collar & Investigations
OFAC Violations
Assisting clients in navigating applications to OFAC for international sanctions licenses and guidance.
Compliance Advising
Providing advice to clients regarding sanctions compliance and risk factors analysis. Assisting clients in design and enhancement of business ethics and compliance programs.
Confidential Matter
Drafted white paper for client on U.S. and Chinese anti-money laundering, embezzlement, and anti-corruption laws.
International Trade
Bureau of Economic Analysis
Assist clients in completing BEA filings and requirements.
Insights
