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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 Global Life Sciences November 3, 2025

Arnold & Porter Provides Regulatory Counsel to Kimberly-Clark Corporation on its Acquisition of Kenvue Inc. Learn more

Meet the fall class of 2025!

Each year, this group of talented new lawyers brings fresh perspectives, intellectual curiosity, and a deep commitment to excellence. We’re proud to welcome our Fall Associates to Arnold & Porter!

News Corporate & Finance October 31, 2025

Arnold & Porter Advises Microsoft on Next Chapter of OpenAI Partnership Learn more

News International Arbitration November 5, 2025

Arnold & Porter Achieves Arbitration Win with Panama Canal Expansion Award Learn More

Enforcement Edge White Collar Defense & Investigations October 30, 2025

U.S. Department of Commerce to Suspend Enforcement of the 50 Percent Rule for One Year Learn more

News Artificial Intelligence October 23, 2025

BTI Consulting Group Recognizes Arnold & Porter Among Top Litigation Firms in BTI Litigation Outlook 2026 Learn more

Presentation Antitrust/Competition November 12, 2025

Competition Bootcamp For In-House Life Sciences Lawyers Learn more and register

Video Series Inside Litigation

Watch our latest video series where our global litigation group shares brief insights on hot topics in complex litigation. Watch and learn more

Topic Administrative Law & Regulatory Litigation

The Second Trump Administration: Insights on New Executive Actions Learn more

Further Reading

Arnold & Porter by the Numbers

100K+

2024 Total Pro Bono Hours

16

Offices Worldwide

167

Chambers-Ranked Lawyers