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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.

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The American Lawyer Names Arnold & Porter Among Top 10 on 2025 A-List Learn more

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Arnold & Porter Continues West Coast Expansion Learn more

Advisory Artificial Intelligence

Generally Speaking: Does Your Company Have EU AI Act Compliance Obligations as a General-Purpose AI Model Provider? Learn more

Topic Administrative Law & Regulatory Litigation

The Second Trump Administration: Insights on New Executive Actions Timely guidance and strategic insights on policy shifts

News Korea

Arnold & Porter Helps Secure Major Victory for South Korea in $48.5 Million Arbitration Appeal Learn more

Critical Compliance Aerospace, Defense & National Security

Guidance Issued to Curb Adversaries' Access to AI Technologies Learn more

Blog eData Edge

Read our latest eData Edge blog, addressing challenges head-on, offering timely insights, best practices, and updates on all aspects of eDiscovery Learn more

News Corporate & Finance

Arnold & Porter Advises AIIB on $160 Million Climate Infrastructure Facility in Brazil Learn more

News Recognition

Chambers USA 2025 Ranks 127 Arnold & Porter Lawyers, 70 Practices Learn More

Arnold & Porter by the Numbers

100K+

2024 Total Pro Bono Hours

Offices Worldwide

170

Chambers-Ranked Lawyers