Photograph of Stefan M. Meisner

Stefan M. Meisner


Stefan Meisner is a partner in the Antitrust and Competition group in the Washington, DC office of Crowell & Moring. He focuses his antitrust practice on complex, multi-district class action litigation alleging Sherman Act violations, U.S. Department of Justice (DOJ) investigations, merger investigations, and intellectual property issues.

He counsels clients on the antitrust implications of patent licensing and settlements of infringement litigation. In addition, he counsels clients on global strategies for addressing cartel prosecutions and defenses, from the inception of government investigations, to the initiation of civil class action litigation in a variety of jurisdictions. He also provides legal services to clients in connection with antitrust matters and electronic discovery issues.

Applying his understanding of clients’ business and legal priorities, Stefan also provides tailored compliance counseling and helps clients proactively address potential risk areas when designing comprehensive compliance programs.

Stefan serves clients in a variety of industries, including consumer products, defense and aerospace, high-tech, semi-conductors, hospitals, alcoholic beverages, steel, mining, and aggregates. He also advises on major mergers and acquisitions.

To develop efficient and effective solutions for businesses facing issues with e-discovery and management of electronically stored information, Stefan counsels clients on electronic discovery issues in the litigation and regulatory arenas. He counsels clients on developing effective strategies for managing electronic records in light of evolving standards on preservation and production of electronic documents and data under the U.S. Federal Rules of Civil Procedure. Stefan also has extensive experience with investigations that involve forensic examination of electronic media and data.

Stefan is active in representing individuals seeking asylum in the U.S. and U.S. service veterans who are seeking government benefits related to their service.

While in law school, he was the Editor-in-Chief of the American University International Law Review.


  • University of Massachusetts Amherst, B.A. (1991)
  • American University Washington College of Law, J.D. (1999) cum laude


Admitted to practice: District of Columbia; Maryland

Professional Activities and Memberships

  • Member, The Sedona Conference®, Working Group on Electronic Document Retention and Production

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Antitrust and Competition

White Collar and Regulatory Enforcement

E-Discovery and Information Management


Civil Antitrust Litigation

Antitrust and Technology

Health Care Antitrust Practice

Antitrust Counseling Practice

Antitrust Mergers and Acquisitions

Show more practices…

  • Representing a Japanese automotive parts manufacturer in the antitrust multi-district litigation relating to automotive parts following DOJ investigation and resolution.
  • Defended a chocolate confectionery company in a class action price fixing litigation, winning summary judgment.
  • Defended Static Control Components, Inc. in a copyright, Digital Millennium Copyright Act (DMCA), and patent infringement action, including assertion of patent misuse defense, obtaining favorable jury verdict after five-week trial, successful Sixth Circuit appeal, and favorable decision from U.S. Supreme Court.
  • Defended a power tools manufacturer, achieving a motion to dismiss with prejudice related to charges of conspiring with other suppliers not to license the plaintiff’s technology and to manipulate certain safety standards.
  • Obtained merger clearance in multiple jurisdictions for defense contractor’s acquisition.
  • Defended a medical device manufacturer in antitrust counterclaim raised in a patent infringement case, winning summary judgment against allegations of “technological tying” of insulin pumps and related disposable infusion “sets.”
  • Defended a semiconductor company in antitrust counterclaim raised in a patent infringement case, winning motion to dismiss against allegations that the patent holder knew its patents were invalid at the time the plaintiff filed its infringement suit.
  • Obtained regulatory clearance in multiple complex acquisitions, often involving Second Requests, for numerous clients.
"Examining EU's Drift Toward US-Style Employer Pact Scrutiny," Law360 (November 15, 2021). Authors: Peter Broadhurst, Karel Bourgeois, and Stefan M. Meisner.
"The Antitrust Docket in 2022," The Government Investigations & Civil Litigation Institute's Seventh Annual Meeting (November 9, 2021). Moderator: Stefan Meisner. Speakers: Alexis J. Gilman.
"Antitrust Enforcement in Labor Markets: Navigating Risks and What to Expect in 2021 and Beyond," GCR/Lexology Webinar (September 28, 2021). Speakers: Juan A. Arteaga, Stefan M. Meisner, and Megan L. Wolf.
Legal 500 United States Ranks Crowell & Moring in Six Practice Areas in 2021 Guide (June 14, 2021)
Firm News / Announcement
"Antitrust Investigations 101: Back to Basics," Investigations: Readiness and Response Webinar Series (April 28, 2021). Presenters: Juan A. Arteaga, Stefan M. Meisner, Megan L. Wolf, and Daniel L. Zelenko.
"DOJ Makes Good on Its Vow to Bring More No-Poach Prosecutions," Antitrust Law Alert (April 2, 2021). Contacts: Stefan M. Meisner, Megan L. Wolf, Daniel L. Zelenko, Ashley (Lee) McMahon, Kate M. Watkins
Client Alert / Newsletter
"DOJ Brings First Criminal Charges for Collusion in Labor Markets," Antitrust Law Alert (December 11, 2020). Contacts: Daniel L. Zelenko, Megan L. Wolf, Stefan M. Meisner, Shawn R. Johnson, Alexis Victoria DeBernardis, Alexis J. Gilman
Client Alert / Newsletter
"Transition 2021: Antitrust in a Biden Administration: Back to the Future?" Crowell & Moring Webinar (December 4, 2020). Presenters: Alexis J. Gilman, Stefan Meisner, Jeane A. Thomas, and Megan L. Wolf.
Crowell & Moring Bolsters Antitrust Team Commercial Dispute Resolution (October 20, 2020)
Press Coverage
As Antitrust Practices Stay Active, Crowell And Lowenstein Bulk Up American Lawyer (October 14, 2020)
Press Coverage

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Crowell & Moring LLP is an international law firm with offices in the United States, Europe, MENA, and Asia that represents clients in litigation and arbitration, regulatory and policy, and transactional and corporate matters. The firm is internationally recognized for its representation of Fortune 500 companies in high-stakes litigation and government-facing matters, as well as its ongoing commitment to pro bono service and diversity, equity, and inclusion.

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