Aggressive representation and informed advice on sensitive antitrust matters

Our comprehensive approach has guided a broad spectrum of companies through complex, high-profile matters involving multi-jurisdiction litigation, business disputes, class actions, state and federal proceedings and mergers and acquisitions. Our antitrust lawyers are true litigators who take novel and high-stakes antitrust cases to trial across the country. We also have a strong practice advising firms on matters at the intersection of antitrust, standards, patents and other intellectual property.

Working closely with our clients, Munger, Tolles & Olson has won novel appellate decisions establishing important principles of antitrust law and helped them avoid litigation, where possible, through detailed risk-avoidance advice.


Our broad-ranging antitrust practice includes the following areas:

Litigation and Trials

  • Class Actions
  • Government Litigation
  • Business-to-Business Litigation
  • Appeals

Litigation Avoidance

  • Pre-Merger Review
  • Agency Negotiation
  • Intersection of Patents and Antitrust

Regulatory Matters

  • Government Investigations
  • Standards Setting
  • Mergers and Acquisitions


We represent a wide range of clients in sectors that include technology, media & entertainment, life sciences, industrial and retail, such as:


  • Google
  • Intel
  • Lyft

Industry & Retail

  • BNSF Railways
  • 1-800 Contacts
  • Steves & Sons

Media & Entertainment

  • MGM Resorts International
  • NCAA
  • Verizon


  • Southern California Edison
  • Pacific Gas & Electric
  • Chevron

Life Sciences

  • Abbott Laboratories
  • AbbVie, Inc
  • IDEXX Laboratories

Related Practices

As needed, our appellate attorneys draw on the experience of lawyers in other practices, including:



Our attorneys draw on decades of experience in the field, and include:

Glenn D. Pomerantz Rohit K. Singla Justin P. Raphael
Blanca Fromm Young Emily C. Curran-Huberty Kuruvilla Olasa
Gregory P. Stone Stuart N. Senator


Our representations include:

Litigation and Appeals

We have won precedent-setting victories for our clients in bet-the-company matters and disputes that challenge their entire business model. Our representations include:

  • Solvay, as lead appellate counsel in the landmark FTC v. Actavis decision, where the U.S. Supreme Court held that “reverse payment” pharma patent settlements are not presumptively unlawful but should be evaluated under the “rule of reason.”
  • Steves & Sons, in the first matter ever in which a jury, not a regulatory body, required divestiture as a remedy in private litigation over a completed merger.
  • AbbVie, in overlapping class actions and enforcement proceedings in multiple jurisdictions related to patent settlements with generic drug manufacturers regarding the testosterone replacement therapy AndroGel, with claims totaling billions of dollars.
  • The attorneys general of New York and California, in coordination with 12 other states, in leading an antitrust challenge to the $26 billion Sprint/T-Mobile merger.
  • An online service provider, in its lawsuit with a data science company that used bots to scrape the provider’s site for data and which claims the service provider is attempting to exclude competitors to its employee analytics services.
  • Lyft, in defending against claims that its pricing model fixes ride fares for both drivers and passengers.
  • BNSF Railway, in a sprawling multi-district proceeding involving price-fixing claims brought against four of the largest railroads in the U.S.
  • MGM Resorts in obtaining dismissal of an antitrust claim alleging a conspiracy to increase prices for Las Vegas hotel rooms using algorithmic pricing software.
  • Chevron, in obtaining dismissal of a suit alleging it conspired with other oil companies to raise gasoline prices.
  • IDEXX Laboratories, in defending against a putative class action on behalf of pet owners in more than a dozen states who allege IDEXX inflated prices for veterinarians’ diagnostic tests. MTO successfully moved to transfer the case to the District of Maine, where IDEXX is headquartered.

Regulatory Matters and Antitrust Counseling

We have led companies through merger evaluations and investigations, and interacted with federal agencies to forestall their concerns. Our representations include:

  • Verizon, in successfully obtaining California Public Utilities Commission approval of its $7 billion acquisition of TracFone Wireless, Inc., then the largest pre-paid wireless provider in the U.S.
  • A major film studio, in navigating relaxed Department of Justice rules on owning chains of movie theaters.
  • An unnamed client regarding the billion-dollar merger of two streaming services.

Case Studies

Detailed examples of how Munger, Tolles & Olson has guided its clients through complex antitrust matters follow.

Steves & Sons, Inc.: The first private suit forcing divestiture after a completed merger

Munger, Tolles & Olson successfully obtained the first ever private party jury verdict requiring divestiture under Section 7 of the Clayton Act for our client, family-owned door manufacturer Steves & Sons, Inc. After a jury found that the consummated merger of two of our clients’ suppliers violated the Clayton Act, the court awarded our client a post-consummation divestiture remedy—the first such remedy ever awarded to a private party under that statute. We later successfully defended the remedy on appeal.

The lower court’s decision was the first jury trial to apply Section 7 of the Clayton Act in 40 years. The Clayton Act bans mergers that substantially lessen competition, and this trial marked the first time that a court, not a regulatory body like the Federal Trade Commission, used the act to require a company to divest an asset as a remedy in private litigation for a merger that had already been completed.

The Fourth Circuit also affirmed the Eastern District of Virginia’s award of $12 million in past damages, later trebled to $36 million. The case attracted significant attention from the U.S. Department of Justice, which filed an amicus brief supporting Steves & Sons, and from legal commentators recognizing its significance.

In February 2020, Munger, Tolles & Olson also represented Steves & Sons in a new lawsuit against JELD-WEN following JELD-WEN’s notice of “allocation” under its supply agreement. Following depositions and an evidentiary hearing, Steves was awarded a preliminary injunction pending a full trial before the parties settled. In March 2021, the Fourth Circuit denied JELD-WEN’s en banc hearing petition, affirming the divestiture and rejecting JELD-WEN’s laches defense, which argued that Steves waited too long to initiate the suit. The Fourth Circuit also affirmed the award of past damages.

We are now working with Steves & Sons to implement the court’s remedy and ensure that competition is restored to the market.

Media Coverage: Fourth Circuit Won’t Rethink Upholding Private Divestiture Order 

AbbVie: Denying class certification in a $6 billion matter claiming “sham litigation”

Munger, Tolles & Olson represents AbbVie Inc. in connection with long-running putative class actions by direct and indirect purchasers of the dyslipidemia treatment drug Niaspan, In Re: Niaspan Antitrust Litigation. Plaintiffs allege that settlement agreements between two predecessor companies, now owned by AbbVie and Teva, were designed to prevent generic versions of Niaspan from hitting the market.

In August 2021, a Pennsylvania federal judge declined to certify a class of end-payor plaintiffs, finding that they had again failed to meet the ascertainability requirement for class certification. The plaintiffs appealed to the Third Circuit, where MTO conducted oral argument on behalf of all defendants. In May 2023, a Third Circuit panel upheld the district court’s denial of class certification.

The Third Circuit’s ruling on the ascertainability requirement is now the leading precedent on how it applies in pharmaceutical-industry litigation.

Media Coverage: 3rd Circ. Upholds Class Cert. Denial In Niaspan MDL


Glenn D. Pomerantz

Rohit K. Singla


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