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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 Antitrust/Competition Litigation May 5, 2026

Arnold & Porter Expands European Antitrust Litigation Team with Addition of Partner Nicola Chesaites Learn More

News Consumer Products & Retail May 4, 2026

Arnold & Porter Defeats Class Certification in the U.S. District Court for the Central District of California Learn More

News Emerging Companies & Venture Capital May 5, 2026

Arnold & Porter Advises D. E. Shaw Ventures on OpenAI, Anthropic Investments Learn More

Featured Topic

The GENIUS Act and Stablecoin Regulation Resource Center Understand The Future Of Digital Currency Policy — Learn More

Presentation Global Life Sciences June 16, 2026

Part I: Biotech Deals — Creating Optimal Licensing and Partnering Arrangements Learn More and Register

News Corporate & Finance May 4, 2026

Arnold & Porter Advises Brazil on Landmark €5B Global Bond Offering, Largest Ever and First Euro Issuance Since 2014 Learn More

Advisory AdTech & Digital Media May 1, 2026

Are You Ready — California Cybersecurity Audits Are Here! Learn More

News Private Client Services April 24, 2026

The Legal 500 2026 Recognizes Arnold & Porter's New York Private Wealth Capabilities Learn More

Featured Topic

Middle East Crisis: Navigating the Conflict with Iran Learn More About Our Strategic Advisory and Counsel Services

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Arnold & Porter by the Numbers

107K+

2025 Total Pro Bono Hours

16

Offices Worldwide

164

Chambers-Ranked Lawyers