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Stephen J Marzen

Shearman & Sterling | United States Department of Justice | Law Offices of Stephen J Marzen β€’ Washington, DC
Antitrust Trade LawPersonal Injury

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Contact

Email
Phone
(202) 816-4974
Address
801 Pennsylvania Avenue Northwest Suite 900, Washington, DC, 20004, US

Professional

About

Stephen J. Marzen is a distinguished attorney based in Washington, DC, specializing in litigation, antitrust and trade law, and government affairs. With a robust legal career spanning over three decades, Stephen brings a wealth of experience and a deep understanding of complex legal frameworks to his practice. He currently serves as a partner at Shearman & Sterling, where he advises clients on navigating the intricacies of antitrust regulations and trade compliance. Stephen's legal acumen is bolstered by his extensive background in government service, having previously held significant positions at the United States Department of Justice. His firsthand experience within federal regulatory bodies equips him with unique insights that benefit his clients in both contentious and non-contentious matters. A graduate of Harvard Law School, where he earned his Juris Doctor in 1984, and the University of Pittsburgh, where he received his Bachelor of Arts in 1981, Stephen has cultivated a reputation for excellence in the legal community. His scholarly approach to law is complemented by strategic advocacy, ensuring that his clients achieve their objectives while adhering to legal and ethical standards. In addition to his litigation expertise, Stephen is committed to fostering a deeper understanding of antitrust law and its implications for businesses in a competitive marketplace. He is a sought-after speaker and thought leader in the field, regularly contributing to discussions on legal trends and best practices. Stephen J. Marzen's dedication to his clients and the legal profession positions him as a trusted advisor in Washington, DC, and beyond, making him a key player in the realms of litigation, antitrust, and government law.

About Antitrust Trade Law

Antitrust attorneys handle matters involving competition law, market practices, and trade regulations. They help businesses comply with antitrust laws and defend against claims. Common matters include price fixing, monopoly claims, merger review, trade practices.

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Credentials

Education
1984 Harvard University Law School JD - Juris Doctor 1981 University of Pittsburgh, Pittsburgh BA - Bachelor of Arts

Recognition & Involvement

Publications
1989 Destruction of Evidence Destruction of Evidence
Updated: Apr 26, 2026
Stephen J Marzen - Antitrust Trade Law Attorney in Washington, DC | Law.AI