Department profile
Axinn

Antitrust

USA Guide 2026 : District of Columbia

Share profile

Axinn

Rankings

About

Provided by Axinn

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 approximately half a trillion dollars 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. 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 M&A, litigation, and government investigations.

Chambers Review

Provided by Chambers

Antitrust - District of Columbia

Band 3

What the Team is Known For
Axinn is a boutique with a compact but highly capable bench of attorneys with expertise in antitrust. Regularly sought after to counsel clients through difficult merger clearances, complex litigation and cartel defense, most notably in disputes involving the intersection of IP and antitrust. Government investigations are a further area of particular expertise.
View ranking table

Work Highlights

Provided by Chambers

  • Axinn advised AssuredPartners on the antitrust aspects of its $13.45 billion sale to Arthur J. Gallagher & Co.

Strengths

Provided by Chambers

  • Axinn has quality lawyers throughout the team with excellent judgment dealing with extremely difficult and challenging cases. They are willing to dig into details and take active, appropriately aggressive litigation roles.

    Antitrust respondentUSA

  • The Axinn partners and associates are adept at handling both litigation and advisory matters. They are both thorough and strategic in their thinking. They have deep knowledge of the facts and remarkable breadth of knowledge.

    Antitrust respondentUSA

  • They have substantive mastery and deal-savviness that makes them a great partner. They are creative and business-minded in finding solutions.

    Antitrust respondentUSA

  • Axinn is a well-regarded firm specializing in antirust. It is very good at quickly understanding, assessing and providing practical and meaningful advice in complex and time-sensitive matters.

    Antitrust respondentUSA

  • Axinn has a number of hugely experienced partners and associates. They provide clear, concise and expert advice. The team is responsive, very practical and user-friendly.

    Antitrust respondentUSA

Notable Practitioners

Provided by Chambers

  • Tiffany Rider
    Tiffany Rider

    Tiffany Rider

    Tiffany Rider is highly regarded for her expert representation in criminal cartel defense. She often defends clients in sophisticated class action litigation.

    • Tiffany has great judgment. She is easy to work with and responsive.

      Antitrust respondentUSA

    • Tiffany is a very level-headed, knowledgeable lawyer. She is a real expert.

      Antitrust respondentUSA

    • Tiffany is an exceptional lawyer and has a really good strategic sense.

      Antitrust respondentUSA
    View profile
  • Bradley Justus
    Bradley Justus

    Bradley Justus

    Bradley Justus is recommended for his broad antitrust practice. He regularly represents clients in high-stakes litigation, mergers and government investigations.

    • Bradley is a tremendous asset and doesn't shy away from difficult conversations.

      Antitrust respondentUSA

    • Bradley is super smart. He is extremely sharp, reliable and thoughtful.

      Antitrust respondentUSA

    • Bradley is very diligent and experienced.

      Antitrust respondentUSA

    • Bradley is a fantastic subject matter expert with courtroom chops.

      Antitrust respondentUSA

    • Bradley gets to the heart of a problem quickly and drives towards solutions.

      Antitrust respondentUSA
    View profile
  • Jeny Maier
    Jeny Maier

    Jeny Maier

    Jeny Maier is an accomplished attorney who advises on significant transactional antitrust matters. Her clients are drawn from the healthcare and consumer product industries.

    • Jeny is a trusted lawyer.

      Antitrust respondentUSA

    • Jeny is a truly outstanding lawyer.

      Antitrust respondentUSA

    • Jeny is the type of counsel you want to call when there is a key decision.

      Antitrust respondentUSA
    View profile
  • Michael L Keeley
    Michael L Keeley

    Michael L Keeley

    Michael Keeley has a broad antitrust practice encompassing merger clearance and litigated merger challenges, as well as litigation alleging monopolization and other anticompetitive conduct.

    • Mike is a consummate legal advisor and business partner.

      Antitrust respondentUSA

    • Mike helps address strategic considerations in M&A.

      Antitrust respondentUSA
    View profile
  • Daniel Oakes
    Daniel Oakes

    Daniel Oakes

    Daniel Oakes is noted for his broad antitrust practice including merger counseling and litigation matters. He often handles price-fixing disputes.

    • Daniel is great to work with. He has strong communication skills and simplifies complex processes.

      Antitrust respondentUSA

    • Dan is a strong lawyer.

      Antitrust respondentUSA
    View profile
  • James Attridge
    James Attridge

    James Attridge

    James Attridge has expertise in cartel proceedings, regularly handling civil and criminal investigations. His practice is bolstered by his prior governmental experience.

    • James's understanding of the inner workings of the DOJ is valuable.

      Antitrust respondentUSA

    • Jimmy is very knowledgeable. His advice always takes into account the business impact of any decision.

      Antitrust respondentUSA

    • Jimmy is a creative and connected lawyer.

      Antitrust respondentUSA

    • James' government experience is an asset and provides unique insight.

      Antitrust respondentUSA
    View profile
  • Leslie C Overton
    Leslie C Overton

    Leslie C Overton

    Leslie Overton handles merger review, litigated merger challenges and civil and criminal government investigations. Clients benefit from her previous experience in the DOJ.

    • Leslie's depth and breadth of knowledge of our business and the competition environment makes her a go-to.

      Antitrust respondentUSA

    • Leslie has a wealth of experience and knowledge.

      Antitrust respondentUSA

    • Leslie is extremely knowledgeable, thoughtful and business-savvy.

      Antitrust respondentUSA
    View profile

Ranked Individuals at Axinn (7)

District of Columbia

Members

Provided by Axinn

Axinn has rankings in the following guides

What success is built on

Chambers is the leading data and intelligence partner for the legal sector.

Explore thought leadership