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Antitrust Litigation & Counseling

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WHAT WE DO

Our international reputation for excellence is based on successes in numerous high-profile antitrust cases. We were founded in 1994 as a boutique antitrust firm, and maintain our commitment to antitrust today.

We remain best known for our record-breaking accomplishments on behalf of plaintiffs. We nonetheless have substantial experience representing defendants — from Fortune 500 companies to small, family firms — in antitrust and commercial litigation.

OVERVIEW OF OUR EXPERIENCE

  • We secured a $3.05 billion settlement (plus injunctive relief valued at between $25 and $87 billion) as lead counsel to a class of millions of retailers in their payment card tying claims against Visa and MasterCard.
  • We secured a $2.75 billion settlement on behalf of Discover Financial Services in a case challenging Visa’s and MasterCard’s exclusionary rules prohibiting U.S. member banks from issuing Discover credit and debit cards to their customers.
  • We have represented parties successfully in jury trials and antitrust cases.
  • We represent plaintiffs and defendants in some of the country’s largest current commercial antitrust cases.
  • We represent parties advocating for or challenging transactions and/or business practices before federal and state antitrust enforcement agencies.
  • We represent parties to multi-billion dollar transactions in merger review proceedings before federal antitrust enforcement agencies.
  • We counsel companies on all aspects of antitrust, including antitrust compliance programs, distribution arrangements, licensing agreements, agency business reviews, merger analysis, litigation risk assessment as well as issues related to standard setting groups and the interface between intellectual property and antitrust law.
  • We submit amicus curiae briefs on important antitrust issues to the United States Supreme Court and to appellate courts.

INDUSTRY EXPERTISE

Constantine Cannon has litigated and counseled clients on antitrust matters that are relevant to a number of industries.

Among other things, Constantine Cannon has particular experience representing parties that participate in the following industries:

What Sets us Apart

Our attorneys are both experts in antitrust law and seasoned litigators. Our approach to every case, whether on the plaintiff’s side or the defense, is to be prepared to take the case to trial. Through technology, optimization of resources, and the specialized expertise of CAAS LLC, a consulting entity with which the firm has an existing relationship, we are able to contain the rapidly increasing costs of litigation better than other firms.

Counseling, Training and Investigations

Our counseling services include advising clients on the antitrust issues raised by certain business practices; enforcement agency investigations and business reviews; litigation risk assessment; merger analysis; management and employee training; advice on competitor collaborations, including joint ventures, standard setting organizations, and trade associations; and investigations into alleged antitrust violations.

Richard M. Aborn
New York
Robert L. Begleiter
New York
Steve Cannon
W. Stephen Cannon
Washington D.C.
Matthew L. Cantor
New York
Lloyd Constantine
Lloyd Constantine
New York
Stephen Critchley
Stephen Critchley
London
Owen Glist
New York
David Golden
Washington D.C.
Seth D. Greenstein
Washington D.C.
Ankur Kapoor
New York
Jean Kim
New York
Marlene Koury
San Francisco
Ethan E. Litwin
New York
Gary J. Malone
New York
Richard_Pike
Richard Pike
London
Douglas E. Rosenthal
Washington D.C.
Taline Sahakian
New York
Gordon Schnell
New York
David A. Scupp
New York
Allison F. Sheedy
Washington D.C.
Jeffrey I. Shinder
New York
Alysia A. Solow
New York
Daniel Vitelli
New York
Jan Friedman Constantine
New York
Richard O. Levine
Washington D.C.
Attorney Sarah Bayer Headshot
Sarah Bayer
New York
Alicja Dijakiewicz-Kocon
London
J. Wyatt Fore
Washington D.C.
Saidah Grimes
New York
Attorney Janice Johnson Headshot
Janice Johnson
Washington D.C.
Agnieska Szewczyk
Agnieszka Szewczyk
London
James J. Kovacs
Washington D.C.
Harrison J. McAvoy
New York
Michelle A. Peters
New York
Grant Petrosyan
New York
Margaux Poueymirou
San Francisco
Paulette Rodríguez López
Washington D.C.
Alan H. Schwartz
New York
Yo W. Shiina
New York
Kristian Soltes
New York
Laura Welikson
New York
Simon Yeung
London
Deborah Givens
New York
Matthew Koenig
New York
Gary Reilly
New York

Antitrust Today Blog Posts

Jun302022
FTC Reaffirms Focus on Labor Markets in Reviewing Microsoft-Activision Blizzard Merger

By Kristian Soltes Federal antitrust enforcers are heeding the call for more vigorous regulation of monopsonies, which may soon no longer be the forgotten man...

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Jun282022
The Antitrust Week In Review

Here are some of the developments in antitrust news this past week that we found interesting and are following.   Drivers’ Lawsuit Claims Uber and...

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Jun222022
The Antitrust Week In Review

Here are some of the developments in antitrust news this past week that we found interesting and are following.   Facebook owner Meta makes antitrust...

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Jun212022
Cydia is Getting a Chance to Prove its App Store Antitrust Claims Against Apple

By David Golden Cydia, the alternative iOS app store, has been given the chance to seek discovery to prove its antitrust claims against Apple. On...

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