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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.

News February 18, 2026

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

News Capital Markets Transactions February 17, 2026

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

Advisory International Trade February 21, 2026

Scotus Tariff Decision Impacts and Next Steps 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