The Paul, Weiss Antitrust Practice advises clients on a full range of global antitrust matters, including antitrust regulatory clearance, government investigations, private litigation, and counseling and compliance. The firm represents clients before antitrust and competition authorities in the United States, the European Union, the United Kingdom and other jurisdictions around the world.
Client News
Intuitive Surgical Wins High-Stakes Antitrust Trial Regarding da Vinci Surgical System
Paul, Weiss achieved a significant victory at trial for surgical robot maker Intuitive Surgical, Inc., in a high-stakes antitrust suit brought by Surgical Instrument Service Company, Inc., (SIS) in the Northern District of California.
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IBM Completes $6.4 Billion Acquisition of HashiCorp
See Also
- Steven J. Williams
- Dotun Obadina
- John C. Kennedy
- Scott A. Barshay
- David E. Sobel
- Joshua H. Soven
- Nicole Kar
- Christopher M. Wilson
- Rich Pepper
- Katharine R. Haigh
- Marta P. Kelly
- J. Todd Hahn
- Christopher Gonnella
- Jarrett R. Hoffman
- Katherine B. Forrest
- Gregory F. Laufer
- Geoffrey R. Chepiga
- John P. Carlin
- Ariane Rockoff-Kirk
- Pietro J. Signoracci
- Peter Carey
- Jonathan H. Ashtor
- Brianna van Kan
- Sohail Itani
- Scott M. Sontag
- Peter E. Fisch
- Mergers & Acquisitions
- Artificial Intelligence
- Digital Technology
- Corporate
- Executive Compensation
- IP & Technology Transactions
- Tax
- Litigation
- Real Estate
- Antitrust
Paul, Weiss advised IBM on its all-cash acquisition of HashiCorp Inc. for $35 per share, representing an enterprise value of $6.4 billion.
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Loews Hotels Wins Dismissal of Antitrust Class Action
Paul, Weiss won a significant victory on behalf of Loews Hotels Holding Corporation, when the U.S. District Court for the Northern District of Illinois dismissed a putative class action alleging an anticompetitive conspiracy among luxury hotel operators.
» moreEvents
Aidan Synnott to Discuss Impact of Antitrust Leadership Changes at ABA Event
Antitrust partner Aidan Synnott will moderate a panel, “The Impact of Changes in Antitrust Leadership in the United States and Elsewhere on International Antitrust Enforcement,” at the American Bar Association’s 2025 International Law Section Annual Conference.
» moreAWARDS & RECOGNITION
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Paul, Weiss Named D.C. Antitrust Litigation Department of the Year by National Law Journal
The National Law Journal recognized Paul, Weiss and its D.C. team as Washington’s “Litigation Department of the Year – Antitrust” at its 2024 Legal Awards.
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Twenty-Two Paul, Weiss Partners Named Among Lawdragon’s 500 Leading Global Antitrust & Competition Lawyers
Lawdragon recognized 22 Paul, Weiss partners on its inaugural “Lawdragon 500 Leading Global Antitrust & Competition Lawyers” list, which recognizes the elite lawyers parrying for an equal playing field for corporations and consumers worldwide.
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Paul, Weiss Wins Two Global Competition Review Awards
Global Competition Review named Paul, Weiss the winner of two categories in its annual GCR Awards, which recognize the cases, law firms, lawyers and enforcers who excelled in the competition and antitrust space over the past year.
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Karen Dunn and Jessica Phillips Named Among Daily Journal’s Leading Commercial Litigators
The Daily Journal named litigation partners Karen Dunn and Jessica Phillips to its 2025 “Leading Commercial Litigators” list, which annually spotlights the top performing bet-the-company litigators across the country.
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Paul, Weiss Named a Finalist Across Two Categories in Concurrences’ Antitrust Writing Awards
Concurrences recently shortlisted articles written by Paul, Weiss lawyers as some of last year’s best business articles in two categories, part of the publication’s annual Antitrust Writing Awards.
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Annie Herdman Named to The Lawyer’s 2025 “Hot 100” List
The Lawyer featured antitrust partner Annie Herdman as one of its 2025 “Hot 100” lawyers.
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Karen Dunn, Bill Isaacson, Catherine Nyarady and Erin Morgan Recognized by The American Lawyer for Qualcomm Trial Win
Litigation partners Karen Dunn, Bill Isaacson, Catherine Nyarady and Erin Morgan were recognized in The American Lawyer’s “Litigation Daily” column for winning a decisive jury verdict for Qualcomm Incorporated.
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Three Paul, Weiss Partners Named to Washingtonian’s List of Washington D.C.’s Top Antitrust Lawyers
Washingtonian magazine featured partners Bill Isaacson, Scott Sher and Josh Soven on its “Washington D.C.’s Top Lawyers: Antitrust” list, which biennially recognizes the city’s top legal talent in antitrust, as voted by area lawyers.
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Paul, Weiss “Highly Recommended” Across Multiple Regions in Global Competition Review’s GCR 100 2025
Global Competition Review (GCR) ranked Paul, Weiss as “highly recommended” in the publication’s 2025 “GCR 100” lists in the New York, Washington and UK jurisdictions.
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Meredith Dearborn Named a Top Antitrust Lawyer by the Daily Journal
The Daily Journal recognized litigation partner Meredith Dearborn as one of its 2024 “Top Antitrust Lawyers.”
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Paul, Weiss Newly Ranked Among the Premier UK Firms by The Legal 500 UK
The Legal 500 UK has ranked Paul, Weiss among the leading UK law firms in the 2025 edition of its directory, with the firm ranking highly in five practice areas.
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Paul, Weiss Receives Top Rankings in Chambers UK 2025
Paul, Weiss is recognized as a leading firm across three practice areas and received 15 individual lawyer rankings in the 2025 edition of Chambers UK, including new rankings in the “Banking & Finance: Sponsors (London)” and “Capital Markets: High-Yield Products (UK-wide)” practices, as well as top-tier partner rankings in the firm’s banking, competition and capital markets practices.
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Karen Dunn, Jeannie Rhee and Amy Mauser Recognized by The American Lawyer for Pretrial Win in Google Ad Tech Case
Litigation partners Karen Dunn and Jeannie Rhee and counsel Amy Mauser were recognized in The American Lawyer’s “Litigation Daily” column for their major pretrial victory for Google in the government’s landmark civil antitrust case over the company’s alleged monopolization of advertising technology.
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Annie Herdman and Brette Tannenbaum Named to GCR’s 40 Under 40 List
Paul, Weiss partners Annie Herdman and Brette Tannenbaum were named to the Global Competition Review’s 2024 “40 Under 40” list, which recognizes the next generation of leading antitrust practitioners worldwide at a time of increasing global focus on competition enforcement and policy.
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Nicole Kar Named a Top Advisor by Foreign Investment Watch
Foreign Investment Watch named antitrust partner Nicole Kar to its “Top Advisors 2025” list, which recognizes the world’s leading foreign investment and national security advisors.
Publications
Scott Sher and Chris Wilson Featured in Vault Q&A on Paul, Weiss’s Antitrust Practice
Antitrust Global Co-chair Scott Sher and partner Chris Wilson were featured in a Q&A on Paul, Weiss’s antitrust practice in the 2025 edition of “Practice Perspectives: Vault’s Guide to Legal Practice Areas.”
» moreAwards & Recognition
Annie Herdman Named a Law.com International Rising Star
Law.com International named antitrust partner Annie Herdman to its “Rising Stars: The UK Legal Industry's Best Up-And-Coming Women, 2025” list, which annually recognizes the most exceptional up-and-coming women lawyers from the nation’s top law firms.
» morePUBLICATIONS
Meredith Dearborn, Tee St. Matthew-Daniel, Russell Wirth and Mark Laramie Publish Article in Daily Journal
Partners Meredith Dearborn and Tee St. Matthew-Daniel, associate Russell Wirth and practice management attorney Mark Laramie co-wrote an article for the Daily Journal on the potential consequences of a new antitrust policy shift in California.
Publications
Update on Trump Administration Antitrust Enforcement
See Also
- Paul D. Brachman
- Katherine B. Forrest
- Martha L. Goodman
- Katharine R. Haigh
- Marta P. Kelly
- Jessica E. Phillips
- Jacqueline P. Rubin
- Scott A. Sher
- Yuni Yan Sobel
- Joshua H. Soven
- Eyitayo “Tee” St. Matthew-Daniel
- Aidan Synnott
- Brette Tannenbaum
- Christopher M. Wilson
- Charles E. Crandall IV
- Chad de Souza
- J. Todd Hahn
- Zuzanna Knypinski
- John W. Magruder
- Mark R. Laramie
- Antitrust
In the weeks since Inauguration Day, the Trump administration has taken several significant actions related to antitrust enforcement. We discuss senior DOJ and FTC leadership appointments, developments in merger review, statements related to labor markets and potential non-compete enforcement, and changes intended to expand presidential power over the FTC.
» moreClient News
TPG to Acquire Altus Power in Take-Private Deal Valued at $2.2 Billion
See Also
Paul, Weiss advised TPG on the antitrust aspects of its take-private acquisition of Altus Power, Inc., one of the largest owners of commercial-scale solar power generation in the U.S., valued at approximately $2.2 billion, including outstanding debt.
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CMA’s New Consumer Law Powers Now in Effect
New consumer law powers for the UK Competition and Markets Authority under the Digital Markets, Competition and Consumer Act 2024 are now in effect, aligning its consumer protection enforcement powers with its long-held competition law powers.
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FSR Update: Insights From the First In-Depth FSR Decision
On April 4, 2025, the European Commission published the much-anticipated public version of its first decision to conditionally clear the acquisition of PPF Telecom by e& under the EU Foreign Subsidies Regulation (FSR). This memorandum sets out the key takeaways of the decision and considers the commission’s assessment and the accepted commitments.
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Faire Wholesale Wins Dismissal With Prejudice of Monopolization Claims
Paul, Weiss won a major victory for Faire Wholesale, Inc., an AI-powered online wholesale marketplace platform, in an antitrust suit brought by competitor Tundra, Inc., obtaining the dismissal of the case with prejudice.
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20 Years of Antitrust Remedies in Review: Lessons for the Future?
The European Commission recently published its report on the implementation and effectiveness of remedies in antitrust behavioral cases between 2003-2022. We summarize the report’s key findings and recommendations.
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Washington Enacts First State General Premerger Notification Requirement
Washington state recently became the first state to enact the Uniform Antitrust Premerger Notification Act. Several states have sector-specific notification requirements, but this is the first generally applicable state-level premerger notification requirement.
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