Rankings

USA

Leading firm in USA 2026

Top figures

16

Offices

1000

Company Size

1946

Established Year

Content provided by Arnold & Porter

Contributions and articles

4 Global Practice Guides

Overview

Provided by Arnold & Porter

With over 1,000 lawyers in 16 offices, Arnold & Porter combines sophisticated regulatory, litigation, and transactional capabilities to resolve clients’ most complex issues. We offer an integrated approach spanning more than 40 practice areas. Through multidisciplinary collaboration and focused industry experience, we provide innovative and effective solutions to mitigate risks, address challenges, and achieve successful outcomes.

Capabilities (3)

  • Litigation
  • Regulatory
  • Transactional

Key people

Provided by Arnold & Porter

  • Michael D. Daneker

    Global Co-Chair

  • Ellen Kaye Fleishhacker

    Global Co-Chair

Work & experience

Provided by Arnold & Porter

Arnold & Porter’s U.S. practice advises clients across a broad range of litigation, regulatory, enforcement, and corporate transactional matters. The firm assists clients in navigating complex legal, policy, and business challenges across industries in the U.S. and globally. Core strengths include Antitrust/Competition, Appellate, Bankruptcy, Commercial Litigation, Corporate & Finance, Intellectual Property, Life Sciences, Labor & Employment, Product Liability, and White Collar Defense.

Ranked Offices at Arnold & Porter

Provided by Arnold & Porter

USA - Head office

District of Columbia

601 Massachusetts Avenue, NW, Washington, DC, District of Columbia, USA, 20001-3743, Washington, DC

UK

Greater London

Tower 42, 25 Old Broad Street, London, Greater London, UK, EC2N 1HQ, London

USA

Massachusetts

500 Boylston Street 20th Floor, Boston, Massachusetts, USA, 02116, Boston


Illinois

70 West Madison Street, Suite 4200, Chicago, Illinois, USA, IL 60602-4231, Chicago


Colorado

1144 Fifteenth Street Suite 3100, Denver, Colorado, USA, CO 80202-2848, Denver


Texas

811 Main Street, Suite 1800, Houston, Texas, USA, TX 77002-2755, Houston


California

777 South Figueroa Street 44th Floor, Los Angeles, California, USA, CA 90017-5844, Los Angeles


New York

250 West 55th Street, New York, New York, USA, NY 10019-9710, New York


New Jersey

One Gateway Center, Suite 1025, Newark, New Jersey, USA, NJ 07102, Newark


California

3000 El Camino Real, Five Palo Alto Square, Suite 500, Palo Alto, California, USA, Palo Alto


California

4 Embarcadero Center, 14th Floor, San Francisco, California, USA, 94111, San Francisco


Washington

Seattle, Washington, USA, Seattle

Ranked Departments at Arnold & Porter (75)

California

California: San Francisco, Silicon Valley & Surrou

Colorado

District of Columbia

Illinois

Ranked Individuals at Arnold & Porter (170)

California

Colorado

District of Columbia

Top figures

16

Offices

1000

Company Size

1946

Established Year

Content provided by Arnold & Porter

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