Tiffany Rider
Partner
Tiffany Rider is an antitrust partner at Axinn with over 20 years of experience widely recognized for her skill in helping clients navigate criminal antitrust cartel investigations, follow-on antitrust class action litigation, and complex mergers and acquisitions.
Tiffany Rider
Partner
Tiffany Rider is an antitrust partner at Axinn with over 20 years of experience widely recognized for her skill in helping clients navigate criminal antitrust cartel investigations, follow-on antitrust class action litigation, and complex mergers and acquisitions.
Ranked by Chambers USA as an "Antitrust: Litigation Specialist" and by The Legal 500, her extensive experience includes representing clients in significant domestic and international cartel cases, advocating before agencies like the Department of Justice and European Commission. She also has a strong track record in civil follow-on MDLs, civil litigation and arbitration.
In her counseling and compliance practice, Tiffany designs and implements global competition compliance programs tailored to meet the diverse needs of clients in a wide array of industries, including technology, manufacturing, transportation, food and beverage, health care and financial services. Additionally, Tiffany has extensive experience representing clients on significant mergers and acquisitions, including before both the Department of Justice and Federal Trade Commission.
Named one of DC’s Top 10 Antitrust Litigation Specialists to Watch in 2023 by Business Today, Tiffany is a frequent speaker on panels discussing criminal antitrust and civil litigation issues. She has held several key ABA leadership roles, including on the International Cartel Task Force, Civil Practice and Procedure Committee, and the Diversity Plan Task Force. She served by invitation from the U.S. DOJ as a non-governmental advisor (NGA) for the International Competition Network (ICN) at the 2021 Annual Conference.
Prior to joining Axinn, Tiffany practiced in the antitrust department of a large, global law firm.
Experience
- Currently, lead counsel defending Tyson Foods in multiple major treble-damage class action litigations and regulatory investigations alleging industry-wide conspiracies to raise the prices of pork and turkey.
- Currently representing an executive in an international price-fixing cartel investigation.
- Currently defending a multi-family real estate investment company in a DOJ criminal investigation and civil litigation involving allegations of information exchange and price-fixing via algorithms.
- Represented a company and obtained leniency in a DOJ no-poach investigation.
- Represented several individuals successfully in a DOJ no-poach investigation.
- Represented Corning Incorporated in the auto part criminal investigation and follow-on civil MDL.
- Successfully closed a no-poach investigation in the fintech sector.
- Successfully navigated a company dealing with parallel investigations involving the DOJ and State AG.
- Successfully closed a bid-rigging investigation of a defense contracting firm.
- Successfully closed a price-fixing investigation of an international shipping company.
- Represented Horizon Lines in the cabotage shipping criminal investigation and follow-on civil MDL, as well as its transactions valued at $610 million with Pasha and Matson.
- Represented EQT Corporation in its $720 million sales of its natural gas distribution business to Peoples Natural Gas.
- Represented Sprint in its opposition to AT&T’s proposed acquisition of T-Mobile. This case was recognized in the 2012 Financial Times “U.S. Innovative Lawyers” report.
- Represented BHP Billiton in its proposed $150 billion acquisition of Rio Tinto (received Department of Justice clearance).
* Includes matters handled prior to joining Axinn
Honors
- Chambers USA – District of Columbia: Antitrust: Litigation Specialists (2018 – 2024)
- Named to Business Today's Top 10 DC Antitrust Litigation Specialists to Watch in 2023
- Lawdragon, 500 Leading Litigators in America (2023 – 2025)
- Named to "Women Worth Watching 2019" by Profiles in Diversity Journal
- The Legal 500 United States (2022 – 2024)
Education
- JD, magna cum laude – Indiana University School of Law (2002)
- BA, Theatre Arts – University of California, Los Angeles (1992)
Admissions
- District of Columbia
- Indiana
- U.S. District Court Northern District of Indiana
- U.S. District Court Southern District of Indiana
- U.S. District Court District of Columbia
- U.S. District Court Eastern District of Michigan
Quotes
Tiffany Rider is a trusted partner and master strategist in cartel defense. Her judgment is impeccable and she is a joy to work with.
Legal 500 United States
She is excellent in both cartel and litigation matters." "She is very experienced in antitrust law and excels in coming up with practical advice." "She has a great rapport with clients and is a pleasure to work with.
…A rock solid attorney, she's disarmingly friendly but an absolute beast when it comes to her command of the law…she's wicked smart.
News & Insights
News & Insights
American Bar Association 2025 Asia-Pacific Conference
Speaking Engagement
Antitrust
Axinn Partners Named to Lawdragon 500 Leading Litigators in America 2025
Awards & Recognitions
Antitrust
ABA International Cartel Workshop 2024
Speaking Engagement
Antitrust
Axinn’s Antitrust Practice Nationally Ranked by The Legal 500 United States for 2024
Awards & Recognitions
Antitrust
Chambers USA 2024 Ranks 16 Axinn Lawyers, including 14 Antitrust Partners, and Recognizes the Firm in Seven Jurisdictions
Awards & Recognitions
Antitrust
GCR Live Cartels: 2024
Speaking Engagement
Antitrust
United States: Cartels
Byline Articles
Antitrust
ABA 72nd Annual Section of Antitrust Law Spring Meeting
Speaking Engagement
Antitrust
Conspiracy Theories Newsletter, 2024 Edition: Eight Predictions for the Future of Cartel Enforcement
Byline Articles
Antitrust
Losing Per Se: Potential Fallout From the U.S. Department of Justice’s No-Poach Enforcement
Publications
Antitrust