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Stefan M. Meisner

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Partner
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Areas of Focus

Overview

Over the past two decades, when companies have faced difficult global cartel investigations, United States Department of Justice antitrust investigations, antitrust class actions, and complex antitrust cases at the intersection of antitrust and patent law, Stefan M. Meisner has guided clients through their most challenging legal issues. In all these situations, Stefan has assisted clients in developing clear strategies with practical steps to ensure clients achieve results consistent with their priorities.

Stefan serves clients in a variety of industries, including heavy manufacturing, health care, consumer products, defense and aerospace, high tech, semiconductors, hospitals, alcoholic beverages, steel, mining, and aggregates.

Stefan has extensive experience practicing before the DOJ and the Federal Trade Commission in a variety of criminal, civil, and merger investigations. In addition, he has managed matters before international agencies, such as the European Commission, the Canadian Competition Bureau, the South African Competition Tribunal, the Japan Fair Trade Commission, Brazil’s Administrative Council for Economic Defense, and others. Stefan has coordinated the global strategy for clients defending multijurisdictional cartel investigations.

Stefan has extensive experience defending clients in private civil litigation as well, representing them in multidistrict litigation in antitrust class action matters at trial and appellate courts throughout the United States. He also represents clients defending antitrust and competition cases brought by competitors and other individual plaintiffs.

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.

To develop efficient and effective solutions for businesses facing issues with electronic discovery and the management of electronically stored information, Stefan advises clients on e-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 the 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.

Career & Education

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

    • District of Columbia
    • Maryland
    • District of Columbia
    • Maryland

  • Professional Activities and Memberships

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

    Professional Activities and Memberships

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

Stefan's Insights

Client Alert | 5 min read | 10.13.26

New York-Presbyterian Hospital Ruling Signals Widening Antitrust Exposure for Hospital Contracting Practices

On October 1, 2026, Judge Brian M. Cogan of the U.S. District Court for the Eastern District of New York denied NYP’s motion to dismiss a consolidated antitrust complaint brought by three self-funded union health plans. The ruling is significant for two reasons. First, it demonstrates that plaintiffs can successfully allege market power against hospital systems even in the absence of traditionally high market shares. Second, the court’s reasoning closely tracks the arguments advanced by the DOJ in its Statement of Interest filed in the case: that market power need not be established through market share alone and can be shown through direct evidence such as supracompetitive pricing, and that exclusionary conduct and rival foreclosure are not required elements of a Section 1 claim. The recent decision validates the government’s legal theories and could enhance the viability of the DOJ’s parallel action against NYP, which is currently proceeding in the Southern District of New York....

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Representative Matters

  • 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.

Stefan's Insights

Client Alert | 5 min read | 10.13.26

New York-Presbyterian Hospital Ruling Signals Widening Antitrust Exposure for Hospital Contracting Practices

On October 1, 2026, Judge Brian M. Cogan of the U.S. District Court for the Eastern District of New York denied NYP’s motion to dismiss a consolidated antitrust complaint brought by three self-funded union health plans. The ruling is significant for two reasons. First, it demonstrates that plaintiffs can successfully allege market power against hospital systems even in the absence of traditionally high market shares. Second, the court’s reasoning closely tracks the arguments advanced by the DOJ in its Statement of Interest filed in the case: that market power need not be established through market share alone and can be shown through direct evidence such as supracompetitive pricing, and that exclusionary conduct and rival foreclosure are not required elements of a Section 1 claim. The recent decision validates the government’s legal theories and could enhance the viability of the DOJ’s parallel action against NYP, which is currently proceeding in the Southern District of New York....

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Recognition

  • Global Competition Review
  • The Legal 500, 2019
  • Washington Super Lawyers, 2012 – Present

Stefan's Insights

Client Alert | 5 min read | 10.13.26

New York-Presbyterian Hospital Ruling Signals Widening Antitrust Exposure for Hospital Contracting Practices

On October 1, 2026, Judge Brian M. Cogan of the U.S. District Court for the Eastern District of New York denied NYP’s motion to dismiss a consolidated antitrust complaint brought by three self-funded union health plans. The ruling is significant for two reasons. First, it demonstrates that plaintiffs can successfully allege market power against hospital systems even in the absence of traditionally high market shares. Second, the court’s reasoning closely tracks the arguments advanced by the DOJ in its Statement of Interest filed in the case: that market power need not be established through market share alone and can be shown through direct evidence such as supracompetitive pricing, and that exclusionary conduct and rival foreclosure are not required elements of a Section 1 claim. The recent decision validates the government’s legal theories and could enhance the viability of the DOJ’s parallel action against NYP, which is currently proceeding in the Southern District of New York....

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Insights

Client Alert | 5 min read | 10.13.26

New York-Presbyterian Hospital Ruling Signals Widening Antitrust Exposure for Hospital Contracting Practices

Client Alert | 3 min read | 06.24.26

OhioHealth Settlement and White House Report Signal Broader Federal Focus on Restrictive Hospital Contracting

Webinar | 06.02.26

The Return of Fuel Surcharges: Antitrust Lessons from the Past Relevant Again

Speaking Engagement | 06.02.26

"The Return of Fuel Surcharges: Antitrust Lessons from the Past Relevant Again," Crowell & Moring Webinar.

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Practices

Industries

Stefan's Insights

Client Alert | 5 min read | 10.13.26

New York-Presbyterian Hospital Ruling Signals Widening Antitrust Exposure for Hospital Contracting Practices

On October 1, 2026, Judge Brian M. Cogan of the U.S. District Court for the Eastern District of New York denied NYP’s motion to dismiss a consolidated antitrust complaint brought by three self-funded union health plans. The ruling is significant for two reasons. First, it demonstrates that plaintiffs can successfully allege market power against hospital systems even in the absence of traditionally high market shares. Second, the court’s reasoning closely tracks the arguments advanced by the DOJ in its Statement of Interest filed in the case: that market power need not be established through market share alone and can be shown through direct evidence such as supracompetitive pricing, and that exclusionary conduct and rival foreclosure are not required elements of a Section 1 claim. The recent decision validates the government’s legal theories and could enhance the viability of the DOJ’s parallel action against NYP, which is currently proceeding in the Southern District of New York....

View All Insights