Antitrust
Notable Representations, Key Contacts
Weil’s global Antitrust team provides clients with the international reach and extensive expertise required to handle complex and rapidly shifting antitrust and foreign investment rules around the world. Our team has a proven track record of achieving successful and innovative outcomes for clients across the full range of transactional and behavioral antitrust and foreign investment matters.
“An exceptional group of attorneys with deep experience representing clients before government agencies.”
Antitrust M&A:
With our deep experience in handling complex cross-border merger review processes and our position at the forefront of shaping antitrust policy, Weil has been trusted to provide effective global strategic counseling, agency representation, and litigation defense for many of the largest, highest-profile transactions in recent years.
Antitrust Litigation:
Weil has a strong reputation for successfully defending clients in their most high-stakes civil and criminal antitrust litigations, achieving the best outcomes at trial and on appeal in respect of the full range of cutting-edge antitrust issues, with particular success in class action litigations.
Cartels & Investigations:
With our deep expertise and global reach, Weil is regularly called upon by clients across the globe to guide them through all phases of criminal and civil cartel investigations. We have consistently obtained favorable results, earning the practice recognition among the top cartel defense firms in the world.
Global Recognition
50
Awards and Recognition, Speaking Engagements, Latest Thinking, Firm News & Announcements
Awards and Recognition
- Weil Named a "Leading" Firm for Competition/Antitrust (international & cross-border) - USA Award Brief — Chambers Global 2026
- Weil Named a "Leading" Firm for Antitrust: Cartels - USA Award Brief — Chambers Global 2026
- Weil Named a "Leading" Firm for Competition/Antitrust - USA Award Brief — Chambers Global 2026
- Weil Named a "Leading" Firm for Competition/Antitrust - Global: Multi-Jurisdictional Award Brief — Chambers Global 2026
- Weil Named “Litigation Department of the Year, Antitrust” Award Brief — National Law Journal Legal Awards 2025
Speaking Engagements
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Dealmaking, pipelines, and regulatory risk – the current life sciences M&A landscape
Speaker(s):
Kristin Sanford
October 21, 2026 — Weil Antitrust partner Kristin Sanford served as a panelist at GCR LIVE Antitrust in Life Sciences to discuss the resurgence of life sciences dealmaking, agency scrutiny, and the shift from “megadeals.”
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No-Poach, Non-Solicits, and Non-Competes: Trends and Risk Beyond Employment Law
Speaker(s):
Jasmine Rosner and
Celine Chan
September 23, 2026 — Orlando, FL — Antitrust partner Jasmine Rosner and Employment partner Celine Chan presented a panel entitled “No-Poach, Non-Solicits, and Non-Competes: Trends and Risk Beyond Employment Law,” as part of the 2026 Corporate Counsel Women of Color Annual Career Strategies Conference.
Latest Thinking
- No Compromise on Candour: European Commission Fines Kingspan €40 Million Four Years After Abandoned Trimo Deal Blog Post — WorthWeil Antitrust Blog — By Niklas Maydell, Niklas Brüggemann, Jakob Dewispelaere, Johanna Sophie Dirkes, Liam Willis, Matthew Fader and Klara Matous — October 16, 2026
- Come Fly with Me: The General Court gives the ecosystem theory of harm new wings Blog Post — WorthWeil Antitrust Blog — By Jenine Hulsmann, Niklas Maydell, Niklas Brüggemann, Ingo Brinker, Neil Rigby, Lucy Chambers and Chris Chapman — September 10, 2026
- Mind the Threshold: FTC Sets a New Record for HSR Enforcement Blog Post — WorthWeil Antitrust Blog — By Mark Seidman, Jasmine Rosner and Nya Gavin — July 27, 2026
- Same as the Old Boss? Trump v. Slaughter and the End of FTC Independence Blog Post — WorthWeil Antitrust Blog — By Mark Seidman and John McDaniel — July 09, 2026
- What Consent Decree Trends Mean For Deal Clearances Publication — Law360 — By Kristin Sanford, Christina Swiatowy, Mia Smutny and Yousef Ziyadi — July 09, 2026
Firm News & Announcements
- Weil Advises OTPP and Trivium Packaging in $3.4B Acquisition by Silgan Holdings and American Industrial Partners Deal Brief — October 21, 2026
- Weil Advises Charlesbank Capital Partners on Strategic Investment in Newly Formed WSHB Support Services Deal Brief — October 20, 2026
- Weil Adds Antitrust Partner Yuni Yan Sobel, Deepening Capabilities Across M&A and Private Equity Practices Press Release — October 19, 2026
- Weil Advises Blackstone in its Sale of ZO® Skin Health to Galderma Deal Brief — October 14, 2026
- Weil Wins Dismissal of Plastics Class Action for ExxonMobil Litigation Win — October 07, 2026
- Weil Secures Second Consecutive Victory for MLBPA and MLBPI in Sports Trading Card Antitrust Class Actions Litigation Win — October 02, 2026