Our Firm

About the Firm

At Arnold & Porter, we are client-driven and industry-focused. Our lawyers practice in more than 40 practice areas across the litigation, regulatory and transactional spectrum to help clients with complex needs stay ahead of the global market, anticipate opportunities and address issues that impact the very value of their businesses. Our global reach, experience and deep knowledge allow us to work across geographic, cultural, technological and ideological borders, to offer clients forward-looking, results-oriented solutions that resolve their US, international and cross-border legal needs.

Firm Facts

Who We Are

  • 100+ Years of business acumen with a practical, forward-looking, results-driven approach
  • 14 Offices in the US, Europe, and Asia
  • 132 Attorneys ranked in Chambers USA, UK, Global, Europe, Latin America, Greater China Region and Asia-Pacific
  • 94 Attorneys who have held senior positions in US and European governments and international organizations
  • 121 Fortune 250 companies have chosen Arnold & Porter as outside counsel

What We Offer

  • Nearly 1,000 lawyers with an unyielding commitment to excellence and professionalism
  • Exceptional depth of talent across the litigation, regulatory and transactional spectrum
  • Leading multidisciplinary practices in the life sciences and financial services industries
  • Among the broadest and deepest service offerings in the two key US legal markets of New York and Washington, DC
  • Broad reach across geographic, cultural, commercial, and ideological borders
  • One of the world's leading pro bono programs, with our attorneys performing more than 130,000 hours of pro bono work in 2022

Rankings—Recognition Across a Broad Spectrum

  • The National Law Journal’s 2023 Appellate Hot List (Recognized for the ninth year)
  • The American Lawyer’s 2022 “A-List” (Recognized 13 times since 2003)
  • Above the Law's "Outside Counsel Rankings": 2021—“Top Tier Firm” overall and top counsel in Defense, Healthcare/Life Sciences and Telecommunications
  • Chambers USA 2022 ranked 106 attorneys as "Leading Individuals"
  • Chambers UK 2023 ranked 12 lawyers as "Leading Individuals"
  • Chambers Global 2023 ranked 36 lawyers
  • Chambers Europe 2023 ranked eight lawyers
  • Chambers Latin America 2023 ranked six lawyers
  • Chambers Asia-Pacific 2023 ranked three attorneys
  • Chambers Greater China Region 2023 ranked three lawyers
  • Global Competition Review ranked the firm on its 2023 "GCR Global Elite" (Ranked for the 15th consecutive year)
  • VAULT Law 100 2023 ranking of the most prestigious U.S. law firms (Ranked for the 19th consecutive year)
  • Legal 500 U.S., UK, Europe, Latin America, and Asia ranked 64 practices and recognized 194 attorneys
  • U.S. News – Best Lawyers “Best Law Firms” 2023 — 42 national rankings and 93 metropolitan rankings in Chicago, Denver, Houston, Los Angeles, New York, San Francisco, San Jose (Silicon Valley), and Washington, D.C.

Diversity—A Core Value at Arnold & Porter

  • Management Leadership for Tomorrow (MLT) Gold Certification for Black Equity at Work (2023) — Part of Inaugural Cohort of leading employers committed to a first-of-its-kind program providing actionable standards to achieve Black equity
  • Mansfield Plus Certification (2018–2022)
  • Human Rights Campaign Foundation's 2022 Corporate Equality Index (Perfect Score for 16th consecutive year)
  • Seramount’s (formerly Working Mother Media’s) 2022 "100 Best Companies for Working Mothers" (Recognized for 18th consecutive year); "Best Law Firms for Women" (2015–2022); "Best Law Firms for Dads" (2020-2022)

Pro Bono—One of the World's Leading Law Firm Programs

  • Bloomberg Law's Pro Bono Innovators (2022)
  • Chambers Diversity & Inclusion Awards: North America - Commended in Pro Bono: Outstanding Firm USA, Private Practice (2022)
  • Financial Times Award for Innovative Lawyers/Rule of Law & Access to Justice Category (won in 2018, 2019; shortlisted in 2020, 2021; and standout in 2022)
  • The American Lawyer’s 2022 Pro Bono Scorecard (Ranked 10th in the U.S., fifth internationally)


We provide the full breadth of legal resources to represent all of our clients' interests. Through interdisciplinary collaboration and specialized experience in our clients' industries, we offer truly innovative and effective solutions that align with both clients' short- and long-term business objectives.

For those clients who cannot afford legal counsel, we maintain a broad and meaningful pro bono practice. Arnold & Porter is one of a small number of firms whose attorneys consistently average more than 100 hours per year of pro bono work. With a lengthy record of excellence, we remain committed to the community at large. In all of our work, we stay true to our core values. We maintain a diverse workplace, a collegial work environment, and an unyielding commitment to inclusiveness.


We set our standards high, expect the best from our attorneys, and return top-tier work on behalf of our clients. Our tradition of excellence is distinguished, and our attorneys are widely respected in the US and abroad. Our attorneys are leaders in their fields, speak frequently throughout the world on the firm's core practice areas, and are published widely in legal journals, industry and mass media, and "hot topic" books.

Our attorneys’ accomplishments are grounded in their training—often at the most noted legal institutions around the globe—and further enhanced by the experiences many of them had as doctors, biologists, chemists, public policy professionals, and former high-ranking officials from key US regulatory agencies and the executive and legislative branches of the federal government. Their insider perspectives are integral to understanding the legal and policy frameworks in which complex business and legal issues arise, and how best to structure transactions and overcome litigation and regulatory challenges.

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