
Competition/Antitrust
Global Guide 2026 : USA
Rankings

Ranked Individuals
Ranked Individuals
About
Provided by Axinn
Axinn has more than 70 full time antitrust lawyers working on M&A, litigation, criminal and conduct investigations. The firm has been a global lead on mergers worth close to half a trillion dollars, including: Dell’s US$67 billion acquisition of EMC; Thermo Fisher’s US$13.6 billion acquisition of Life Technologies and US$12.5 billion tender offer of Qiagen; Tyson Foods’ US$2.16 billion acquisition of Keystone Foods and US$1.2 billion sale of its pet treats business; Ball Corporation’s US$6 billion acquisition of Rexam; Johnson Controls’ US$2 billion sale of Scott Safety to 3M; McKesson’s US$3.4 billion joint venture with Change Healthcare; and Google’s most complex deals, including Motorola Mobility and ITA Software. Axinn has extensive experience in major trials and class actions, including the ad technology business litigations (for Google), the multiple major treble-damage class action litigations and regulatory investigations (for Tyson Foods); a patent infringement and antitrust litigation regarding Indivior’s opioid dependency treatment drug Suboxone® Film and the Generic Drugs MDL (for Alvogen); the In Re Surescripts monopolisation class action (for RelayHealth (McKesson)); and In Re Blue Cross antitrust litigation (for Independence Health Group). The firm has litigated six merger cases brought by government agencies (winning five). Axinn has deep contacts with the staff and front offices of the FTC and the DOJ in both Republican and Democratic administrations.
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Strengths
Provided by Chambers
Axinn has one of the best antitrust teams in the US that tackle all types of issues for some of the largest companies in the world. They are quick to respond and anticipate issues.
Competition/Antitrust respondentGlobalAxinn's terrific understanding of the law plus their strong instincts regarding how the regulators might react is invaluable.
Competition/Antitrust respondentGlobalAxinn's exceptional bench of talent address the most sophisticated issues. The team have a strategic mindset and quickly distill complex issues to achieve favorable outcomes.
Competition/Antitrust respondentGlobalThe Axinn team drive cases and excel. They are extremely responsive and provide excellent strategic judgment.
Competition/Antitrust respondentGlobalAxinn is a collaborative and very client-oriented firm. The lawyers are specialized and have deep expertise.
Competition/Antitrust respondentGlobal
Notable Practitioners
Provided by Chambers
Band 2 
Band 2 
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 is a superb attorney. She is commercially aware and savvy.
Competition/Antitrust respondentGlobalTiffany does an excellent job. She is incredibly effective at marshaling arguments.
Competition/Antitrust respondentGlobalTiffany is very smart and focused.
Competition/Antitrust respondentGlobalTiffany Rider is really practical and clear.
Competition/Antitrust respondentGlobal
Band 3 
Band 3 
James Attridge
James Attridge is commended for his cartel antitrust practice. He regularly represents both individuals and corporations in DOJ and international enforcement agency investigations. His command of policy and understanding how to represent his clients are impressive.
Competition/Antitrust respondentGlobalJames is practical and client-focused.
Competition/Antitrust respondentGlobalJames is very astute and quick. He thinks on his feet.
Competition/Antitrust respondentGlobalJames brings a deep knowledge of criminal antitrust.
Competition/Antitrust respondentGlobal
Ranked Individuals at Axinn (2)
Members
Provided by Axinn

Michael L Keeley
Head of Department

James Attridge
View profile of James Attridge
Tiffany Rider
View profile of Tiffany Rider
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