DOJ’s Antitrust Division Remains Interested in Your Private Litigation
Axinn partner Mary Helen Wimberly authored the Westlaw Today article, published August 13, 2026.
Axinn Named Antitrust Law Firm of the Year at the Chambers USA Awards 2026
Axinn is proud to be named Antitrust Firm of the Year at the 2026 Chambers USA Awards, which honor top law firms and lawyers across the U.S. for excellence, innovation, and high performance.
Another HSR Penalty Record: KKR’s $250 Million Settlement
DOJ’s proposed $250 million settlement with KKR would be more than 20 times the previous record and reflects allegations of filing deficiencies across numerous transactions.
DOJ’s Antitrust Division Remains Interested in Your Private Litigation
Axinn partner Mary Helen Wimberly authored the Westlaw Today article, published August 13, 2026.
Axinn Named Antitrust Law Firm of the Year at the Chambers USA Awards 2026
Axinn is proud to be named Antitrust Firm of the Year at the 2026 Chambers USA Awards, which honor top law firms and lawyers across the U.S. for excellence, innovation, and high performance.
Another HSR Penalty Record: KKR’s $250 Million Settlement
DOJ’s proposed $250 million settlement with KKR would be more than 20 times the previous record and reflects allegations of filing deficiencies across numerous transactions.
DOJ’s Antitrust Division Remains Interested in Your Private Litigation
Axinn partner Mary Helen Wimberly authored the Westlaw Today article, published August 13, 2026.
Antitrust
Axinn’s full-service antitrust practice stands among the largest and most experienced. Our team works coast to coast and across borders to deliver integrated counsel on mergers and acquisitions (M&A), litigation, and government investigations.
Global Leader in Antitrust
Celebrated as a top-ranked antitrust practice by Chambers and Partners and Global Competition Review, Axinn is renowned for representing some of the world’s largest companies in matters of the highest strategic importance. Our track record of success includes leading high-profile civil and criminal litigations and investigations. Orchestrating an estimated $750 billion in M&A transactions, we have gained clearances for intensely contested deals, including the largest cash merger in U.S. history, the largest-ever tech deal, and other landmark transactions.
Unmatched Experience
We don't just understand the government authorities you'll face – we have inside agency experience. Our team of more than 100+ dedicated antitrust lawyers includes former high-ranking officials from the Federal Trade Commission (FTC) and U.S. Department of Justice (DOJ) as well as European Union antitrust regulators. Our dual perspective and experience enable us to tackle the most challenging multinational antitrust issues.
Deep Commitment to Client Success
Invested in our clients' success, we provide in-depth analysis and dedicated advocacy. Our inquisitive and incisive approach enables us to navigate the most complex legal issues with precision. We value collaboration and inclusivity, evidenced by our success in leading multijurisdictional teams to resolve sprawling litigations and advance cross-border deals.
Our reputation as tenacious advocates for strategic transactions is built on our track record of obtaining global clearances for multibillion-dollar deals combining industry rivals.
Axinn lawyers regularly serve as lead counsel, overseeing co-counsel around the world. Our unique experience and perspectives make us adept at developing cohesive strategies to address regulators’ concerns head-on and gain approvals in the most challenging jurisdictions.
Experience:
- Broadcom’s $69 billion acquisition of VMware.
- Dell’s $67 billion acquisition of EMC.
- Thermo Fisher Scientific’s $13.2 billion acquisition of Life Technologies and $12.5 billion tender offer to acquire QIAGEN .
- WestJet Airlines Ltd. in connection with equity investments by Delta Air Lines and Korean Air.
- Funds managed by Greenbriar Equity Group in connection with the sale of oil change operator Breeze Autocare to Valvoline Inc.
Axinn’s substantial experience as lead counsel in Section 7 challenges to mergers includes:
- Obtained a judgment rejecting the DOJ’s bid to block SunGard’s $825 million acquisition of Comdisco’s business recovery assets.
- Successfully litigated against the DOJ’s attempt to block George’s Inc.'s sale of assets to Tyson Foods after the sale had been completed.
- Successfully litigated against the City of New York in its efforts to stop Group Health Inc.'s acquisition of HIP Insurance Company.
Employing a sophisticated yet practical approach, Axinn has defended major industry players in some of the most high-profile and complex antitrust litigations and deal reviews in recent history. From private treble-damage class actions and sprawling multidistrict litigations (MDL) to price-fixing, bid-rigging, market allocation, and other antitrust claims, we resolve cases strategically and efficiently. Our experience extends to monopolization disputes, merger trials, criminal defense, and internal investigations.
Our inquisitive nature drives us to explore all facets of antitrust claims, ensuring comprehensive and diligent representation across industries. We consistently apply our creativity and bottom-line perspective to achieve exceptional outcomes in matters involving third-party subpoena defenses, leniency applications, antitrust compliance, and government investigations.
Experience:
- Representing Tyson Foods in multiple class action lawsuits alleging collusion among competitors.
- Representing Alvogen in the sprawling Generic Drugs MDL and in its antitrust counterclaims against Indivior relating to Alvogen’s launch of a generic equivalent to SUBOXONE®sublingual film.
- Representing Momenta Pharmaceuticals in a monopolization and class action lawsuit.
In today’s aggressive enforcement environment, the choice of cartel counsel is crucial. Lawyers must be incisive advisors, inquisitive strategists, and invested advocates. Axinn embodies these qualities.
We pride ourselves on handling the two largest price-fixing investigations of the past decade. We’ve represented clients in cartel investigations by major global authorities, including:
- DOJ
- Australian Competition and Consumer Commission
- Brazil’s Administrative Council for Economic Defense
- Canadian Competition Bureau
- European Commission
Our ranks include former federal prosecutors and leaders from the DOJ Antitrust Division who have overseen criminal investigations, trials, and policy initiatives. Leveraging our government experience, we take an integrated approach to managing all aspects of representation: compliance programs; internal investigations; government probes; criminal proceedings; and civil litigation.
We understand that each client’s goals and challenges are unique and devise tailored, creative strategies to resolve investigations.
We excel in leading complex matters at the intersection of antitrust and intellectual property (IP) laws. Combining our advanced technical training and focused IP experience, we regularly advise on standard-setting and fair, reasonable, and nondiscriminatory issues.
Clients call on us to conduct thorough internal investigations and to develop and implement robust antitrust compliance programs. Our client-centric approach empowers clients to navigate the most challenging antitrust landscapes with confidence.
Experience:
- Representing Google before FTC with respect to Standard Essential Patents
- Representing Red Hat before DOJ with respect to patent acquisitions
- Representing Motorola Mobility before FTC regarding patent issues
Our appellate lawyers combine firsthand government service with proven advocacy in high-stakes appeals. With former federal and state appellate clerks, U.S. Department of Justice and State Solicitor General’s Office veterans, and experienced Supreme Court practitioners, we distill complex trial records into concise, persuasive arguments.
We handle appeals across antitrust, commercial, intellectual property, and government enforcement matters—including by stepping in post-trial to preserve victories or reverse adverse rulings. We also work seamlessly with trial teams to preserve key issues, develop case strategy, and present the strongest possible arguments. From briefing to oral argument—and through merits briefs, petitions for discretionary review, and amicus submissions—we deliver targeted strategies that protect outcomes and shape the law.
Insights
Event
|October 11, 2026
Consero Healthcare General Counsel Forum 2026
Axinn is proud to sponsor Consero’s Healthcare General Counsel Forum, being held October 11-13 in San Antonio, Texas. ...Read more
Event
|October 8, 2026
Energizing Tomorrow: The Future of Energy, Antitrust & International Business Law
Axinn partner Dan Oakes will attend the 2026 AIJA seminar in Düsseldorf, which will address complex legal challenges arising from the global energy transition, evolving competition law enforcement, and international business regulation, covering topics like sustainability cooperation, green investment contracting, and the regulatory landscape for cross-border transactions in renewable energy, hydrogen, and carbon capture....Read more
Event
|October 4, 2026
On October 8, Axinn partner Michael O'Mara will speak at the International Bar Association's 2026 Annual Conference, being held October 4-9 in Copenhagen, Denmark....Read more
Event
|September 16, 2026
Axinn partners Daniel Matheson and Kail J. Jethmalani will speak at two Fordham Competition Law Institute programs running September 16-18: the Antitrust Economics Workshop and the 53rd Annual Conference on International Antitrust Law and Policy....Read more
Event
|September 15, 2026
Women, Influence, & Power in Law Conference 2026
On September 15, Axinn Partner Mary Helen Wimberly will speak on the "Antitrust in Transition: Risks & Opportunities in a Dynamic Market" panel at ALM"s Women, Influence, & Power in Law Conference, being held September 14–16, 2026 in Nashville, TN....Read more
Event
|September 9, 2026
HNBA/VIA Annual Convention 2026
Axinn is pleased to announce its sponsorship of the Hispanic National Bar Association and VIA Fund’s Annual Convention. ...Read more
Event
|September 9, 2026
The DOJ’s Antitrust Whistleblower Rewards Program
Axinn partner Jimmy Attridge will speak during a Federal Bar Association webinar titled "The DOJ’s Antitrust Whistleblower Rewards Program" on September 9....Read more
News
|September 8, 2026
|1 min read
Axinn Secures Win for Google in Ad Tech Case
Axinn LLP secured a major victory for Google (Nasdaq: GOOG) in the United States, et al. v. Google LLC, before the U.S. District Court for the Eastern District of Virginia (EDVA), where Judge Leonie Brinkema rejected the Department of Justice's bid to impose major structural changes on Google's ad tech business, including breaking apart tools that help small businesses reach new customers and grow....Read more
September 8, 2026
|4 min read
Trying Your Luck: What the Data Show About the Antitrust Division’s Track Record at Trial
Event
|September 4, 2026
30th Annual IBA Competition Conference
Axinn is proud to sponsor the International Bar Association’s Annual Competition Conference, being held September 4-5 in Florence, Italy....Read more
Practice Chair
Featured Insights
Featured Insights
Consero Healthcare General Counsel Forum 2026
Sponsorship
Antitrust
Energizing Tomorrow: The Future of Energy, Antitrust & International Business Law
Sponsorship
Antitrust
IBA Annual Conference 2026
Sponsorship
Antitrust
CCWC 22nd Annual Career Strategies Conference
Sponsorship
Fordham Competition Law Institute's 53rd Annual Conference on International Antitrust Law and Policy, and Antitrust Economics Workshop
Sponsorship
Antitrust
Women, Influence, & Power in Law Conference 2026
Sponsorship
Antitrust
IP Litigation North America Summit 2026
Sponsorship
Intellectual Property
HNBA/VIA Annual Convention 2026
Sponsorship
Antitrust
The DOJ’s Antitrust Whistleblower Rewards Program
Webinar
Antitrust
Axinn Secures Win for Google in Ad Tech Case
Deals & Cases
Antitrust
