Arnold & Porter’s Commercial Litigation attorneys help clients resolve their most complex and high-stakes disputes with practical, creative strategies grounded in deep industry and regulatory insight.
We not only litigate through early motion practice, summary judgment, arbitration, and trial, but routinely advise clients on identifying paths to efficient resolution and risk mitigation when a stealthy exit is in our clients’ best interests. Clients rely on us to handle the full range of commercial litigation spanning breach of contract and fiduciary duty claims; licensing disputes; M&A, earn-out, CBE, and post-closing indemnification matters; fraud, RICO, and business torts; alter ego and veil-piercing claims; data breach and cybersecurity litigation; and bankruptcy-related disputes.
Arnold & Porter has been named a “Commercial Litigation Powerhouse” by BTI Consulting Group and named to Law360’s list of “Firms That Dominated the Federal Circuit.” Clients consistently note the team’s strategic depth and execution: “The team deeply understood all aspects of our business and commercial disputes and leveraged their knowledge against opposing counsel at trial.” (Chambers USA 2026); another notes, “Arnold & Porter has a deep knowledge of the law and local precedent, with formidable attorneys assigned to handle litigation diligently and with a high level of competence.” (Chambers USA 2026). Simply put, as seasoned trial lawyers, we deliver results – on your terms.
Experience Highlights
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Daher Aerospace in commercial dispute in the Commercial Division of New York Supreme Court relating to breach of indemnity and fraud claims against seller arising from purchase of manufacturing facility.
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Nucor Corporation, as lead counsel defending against $500 million antitrust group boycott lawsuit by competitor related to U.S. national security tariffs on imported steel, resulting in dismissal of all claims with prejudice on multiple grounds and affirmed by the Fifth Circuit.
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Samsung Electronics America in obtaining dismissal of a nationwide data breach class action MDL in the District of New Jersey, where plaintiffs asserted class-wide and statutory claims in a 97-count consolidated complaint.
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Owner and insurers of the M/V Alnic MC as lead counsel, securing resolution of all 50+ injury and wrongful death claims before trial arising from the highly publicized collision between defendant's oil tanker and missile destroyer, after prevailing on several key procedural motions.
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FS Medical Supplies in a $1 billion dispute enforcing its contractual rights against a Chinese medical device manufacturer, including securing an anti-suit injunction against the manufacturer’s counter-suit in China.
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Lummus Technology, a leading licensor of proprietary petrochemicals, refining, gasification and gas processing technologies, in securing a complete jury verdict, which was affirmed on appeal, awarding the client of all breach of contract claims and attorney’s fees in an $8.5 million dispute over a petrochemical plant.
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Airbus in defeating over 100 personal injury claims in a class action and several opt-out personal injury actions pending in Halifax, Nova Scotia relating to the crash landing of an Air Canada A320 aircraft. The case settled after years of litigation without any financial contribution from Airbus.
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Perrigo in a $33.5 million breach of contract dispute with Teva Pharmaceuticals over a profit-share agreement for the purchase and sale of generic antihistamine Fexofenadine, securing dismissal of over $9 million in claimed damages and a successful settlement.
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NRCO Engineering in securing a complete victory in an ICDR arbitration arising from a cross-border LNG supply venture in Eastern Europe, obtaining all damages, attorneys' fees, and interest sought.
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Hyundai Motor Company in securing dismissal of a right of publicity action brought in California Superior Court in connection with name of one of Hyundai's vehicle models sold in Korea.
Focus Areas
Key Contacts
Related Services
Recognition
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Chambers GlobalDisputes (International & Cross-Border) (USA) (2021-2026)
Dispute Resolution: International Firms (South Korea) (2021-2026)
Commercial and Corporate Litigation (UK) (2023-2024) -
Chambers Asia-PacificDispute Resolution: International Firms (South Korea) (2024-2026)
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Chambers USALitigation: General Commercial: The Elite (Nationwide) (2026)
Litigation: General Commercial (California) (2025-2026)
Litigation: General Commercial (Colorado) (2007-2026)
Litigation: General Commercial (Illinois) (2016-2026)
Litigation: General Commercial (Texas) (2024-2026)
Litigation: General Commercial (New York) (2008-2026)
Litigation: General Commercial (Washington, D.C.) (2006-2026)
Litigation: General Commercial (Washington) (2026) -
The Legal 500 UKDispute Resolution: Commercial Litigation (Premium) (2017-2026)
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The Legal 500 USGeneral Commercial Disputes (2015-2026)
International Litigation (2018-2026)
Securities Litigation: Defense (2014-2026)
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Benchmark LitigationHighly Recommended — Dispute Resolution (District of Columbia) (2024-2026)
Recommended — Dispute Resolution (California) (2024-2026)
Recommended — Dispute Resolution (New York) (2024-2026) -
Best Law Firms Ranked by Best LawyersBet-the-Company Litigation (San Francisco) (2020-2026)
Commercial Litigation (National) (2010-2026)
Commercial Litigation (Boston) (2025-2026)
Commercial Litigation (Colorado) (2025-2026)
Commercial Litigation (Houston) (2024-2026)
Commercial Litigation (San Francisco) (2024-2026)
Commercial Litigation (Washington, D.C.) (2010-2026)
Ethics and Professional Responsibility Law (San Francisco) (2026) -
BTI Consulting GroupIntimidating Opponent in Litigation (2023-2026)
Commercial Litigation Powerhouses (2026)
Complex Commercial Litigation Powerhouses (2024-2026)
Class Action Powerhouses (2025-2026)
Class Action Leaders (2024)
Gen AI Litigation Leaders (2026)
Best of the Best Law Firms in Class Actions (2024-2025) -
Chambers EuropeCommercial and Corporate Litigation (UK) (2023-2024)
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Chambers UKCommercial and Corporate Litigation (London) (2018-2024)
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FT Innovative Lawyers“Standout” North America (2023)
