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Innovative. Integrated. Industry-Focused.

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

Innovative. Integrated. Industry-Focused.

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

News Commercial Litigation December 11, 2025

Arnold Porter Recognized in Chambers Asia-Pacific 2026 Learn More

News December 11, 2025

Financial Times Innovative Lawyers Awards Names Arnold & Porter a ‘Standout’ Firm in Pro Bono Learn more

News Corporate & Finance December 9, 2025

Latinvex Recognizes Valentina Garzon in 2026 ‘Latin America’s Rising Legal Stars’ List Learn more

News Financial Technology December 8, 2025

Chambers Recognizes Arnold & Porter as a Leading FinTech Firm Learn More

News Antitrust/Competition December 4, 2025

Global Competition Review Recognizes Arnold & Porter in 2026 ‘Foreign Investment Control’ Guide 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

Seminar/Conference Global Life Sciences January 28, 2026

Arnold & Porter’s 2026 Life Sciences Future Forum 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

Arnold & Porter by the Numbers

100K+

2024 Total Pro Bono Hours

Offices Worldwide

166

Chambers-Ranked Lawyers