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Innovative. Integrated. Industry-Focused.

World-class regulatory, litigation and transactional solutions for your most complex challenges.

  • Regulatory

    Sector-specific expertise to support virtually every aspect of your regulated business activities.

  • Litigation

    Combining creative litigation strategies with business practicality to resolve high-stakes disputes.

  • Transactional

    Trusted advisors for our clients' most complex transactions.

Innovative. Integrated. Industry-Focused.

World-class regulatory, litigation and transactional solutions for your most complex challenges.

  • Regulatory

    Sector-specific expertise to support virtually every aspect of your regulated business activities.

  • Litigation

    Combining creative litigation strategies with business practicality to resolve high-stakes disputes.

  • Transactional

    Trusted advisors for our clients' most complex transactions.

Advisory February 21, 2026

SCOTUS Tariff Decision Impacts and Next Steps Read our latest advisory for key insights and contact our team to discuss how it may affect your business

News Capital Markets Transactions February 17, 2026

Arnold & Porter Bolsters Capital Markets Team With Christopher DeCresce in New York Learn more

News February 18, 2026

Corporate Counsel Recognizes Arnold & Porter with Three Finalists on its 2026 Women, Influence & Power in Law Shortlist Learn more

News Antitrust/Competition February 18, 2026

Arnold & Porter Serves as Lead Global Antitrust and FDI Counsel to Palo Alto Networks in its $25 Billion Acquisition of CyberArk Learn More

eData Edge: Navigating the Everchanging World of eDiscovery eDiscovery & Data Analytics February 18, 2026

AI, Confidentiality, and the Scope of Privilege Learn more

News International Arbitration February 13, 2026

Chambers Global 2026 Ranks 42 Arnold & Porter Lawyers, 34 Practice Areas Learn More

Seminar/Conference Global Life Sciences March 3, 2026

New Date: Arnold & Porter’s 2026 Life Sciences Future Forum Learn more and register

Inside Litigation Video Series February 20, 2026

Invest Early. Win Later. Learn more

Blog Administrative Law & Regulatory Litigation Major Questions

Read our latest blog series for insights on federal and state administrative law, including agency rulemaking, executive orders, litigation, and compliance Learn more

Further Reading

Arnold & Porter by the Numbers

107K+

2025 Total Pro Bono Hours

16

Offices Worldwide

166

Chambers-Ranked Lawyers