Arnold & Porter

What Arnold & Porter does

Arnold & Porter is a private international law firm founded in 1946 and headquartered in Washington, DC, operating as a Delaware limited liability partnership (Arnold & Porter Kaye Scholer LLP) with affiliated LLPs in London and Brussels. The firm provides integrated regulatory, litigation, and transactional legal services to large corporate enterprises, governments, and public institutions across regulated industries including life sciences, financial services, energy, technology, and consumer products. Its practice is organized around three service lines — Regulatory, Litigation, and Transactional — supported by sector-focused teams such as Life Sciences & Healthcare Regulatory, Antitrust/Competition, and Investment Management. Notable engagements include advising South Korea's Ministry of Trade, Industry and Energy on US lobbying, advising the Central Bank of Brazil on a $3.4 billion FX Hedging Conduit with the Inter-American Development Bank, and advising GrandBay Group on a US$75 million acquisition financing.

The firm employs 1,001-5,000 people across 16 offices worldwide, including New York, Los Angeles, San Francisco, Seattle, Denver, London, Brussels, Amsterdam, Seoul, and Shanghai. Revenue is generated primarily through billable legal services on an hourly, fixed-fee, or transaction-based basis. Client acquisition is partner-led and driven by industry reputation, Chambers rankings (142 ranked lawyers, 75 ranked practices in Chambers USA 2026), lateral partner hiring (Pallavi Wahi in Seattle, Aron Estaver in San Francisco, Stephanie Kang in Los Angeles), and direct relationships. The firm's go-to-market strategy emphasizes thought leadership via publications (FCA Qui Notes, Enforcement Edge, Environmental Edge, Consumer Products & Retail Navigator), webinars, and in-person forums. Core technology is not publicly disclosed; the firm does not market proprietary AI or software products and operates as a traditional professional services firm.

Arnold & Porter logs over 107,000 pro bono hours annually and is consistently ranked in the Am Law 100. Its competitive positioning rests on deep regulatory expertise, government alumni networks (former FDA, SEC, and ambassadorial officials), and the ability to deliver cross-jurisdictional mandates across North America, Europe, and Asia Pacific.

Name

Arnold & Porter

Legal name

Arnold & Porter Kaye Scholer LLP

Website

https://arnoldporter.com

Company type

Private

Founded year

1946

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

Arnold & Porter is a private international law firm founded in 1946 and headquartered in Washington, DC, providing integrated regulatory, litigation, and transactional legal services to large corporates, governments, and institutions across regulated industries worldwide.

Ownership category

akta.pro rank

Headquarters

HQ city

New York

HQ country

United States

HQ region

North America

Offices11 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Marketing or Sales, Technology or R&D, Others

Revenue model

1. Legal Services - Professional Fees: Arnold & Porter generates revenue primarily through billable legal services rendered to corporate clients, governments, and institutions. Fees are charged on an hourly basis, fixed-fee, or transaction-based arrangement depending on the matter type (litigation, transactional, regulatory advisory). As an Am Law 100 firm, revenue is driven by partner headcount, matter complexity, and client concentration in regulated sectors.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels6 records

Core offering

Arnold & Porter is an international law firm delivering integrated regulatory, litigation, and transactional legal services to corporations, financial institutions, life sciences companies, and governments. Services are rendered by partners and associates under hourly, fixed-fee, or transaction-based fee arrangements across highly regulated sectors including life sciences, financial services, energy, technology, and international trade. The firm supplements its legal services with knowledge publications, webinars, and topic resource centers but does not sell standalone technology products or platforms.

Product overview

Arnold & Porter is a global law firm offering integrated legal services rather than a technology product portfolio. The firm's core offering consists of three integrated service lines—Regulatory, Litigation, and Transactional—supported by industry-focused practices including Life Sciences & Healthcare Regulatory, Antitrust/Competition, Consumer Products & Retail, and Technology & Media. The firm supplements its legal services with knowledge resources such as the FCA Qui Notes blog, The Chemical Compound quarterly newsletter, and educational webinars. Arnold & Porter does not offer a distinct software product, platform, or module; rather, it delivers legal expertise as a service.

Differentiator

Problem solved

Functional benefit

Products and services

• Regulatory Legal Services Sector-specific regulatory counsel covering FDA matters, SEC enforcement, EU/UK medical devices, UK FCA, antitrust, international trade, environmental regulation, and consumer products compliance. The practice supports virtually every aspect of clients' regulated business activities and is staffed by former senior government officials.
• Litigation Services

Named customers3 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Four partnerships are on record, tiered core and notable.

• Ministry of Trade, Industry and Energy (South Korea)coreGTM or Marketing Partner · 1 March 2024South Korea's Ministry of Trade, Industry and Energy engaged Arnold & Porter as one of three major US law firms for US lobbying activities covering trade, energy, digital protection, semiconductors, and Indo-Pacific partnership. The ministry increased its US lobbying expenditure by approximately 17.6% year-on-year to ~$156.9 million (covering March 2024 to February 2025), driven by the Trump administration's tariff announcements. Arnold & Porter was retained alongside Holland & Knight and Hogan Lovells.
• GrandBay GroupnotableStrategic or Co-development PartnerArnold & Porter advised GrandBay Group on a US$75 million acquisition financing and MX$90 million revolving credit facility. The financing was secured from Banco Multiva and Fondeo Horizonte to fund the acquisition of Blue Tissue, a Mexico-based tissue paper manufacturer.
• Central Bank of BrazilcoreStrategic or Co-development PartnerArnold & Porter advised the Central Bank of Brazil on an agreement with the Inter-American Development Bank (IDB) to establish an FX Hedging Conduit enabling up to $3.4 billion in foreign-exchange hedging to mobilize private investment for sustainable development in Brazil. The system connects the IDB to domestic financial institutions, reducing currency risk and completing Brazil's Eco Invest program structure.
• Inter-American Development Bank (IDB)coreStrategic or Co-development PartnerThe IDB partnered with the Central Bank of Brazil via an agreement on which Arnold & Porter advised. The FX Hedging Conduit connects the IDB to domestic Brazilian financial institutions, enabling up to $3.4 billion in FX hedging to mobilize private investment for sustainable development in Brazil.

Scale indicators5 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Sullivan & Cromwell: Elite Am Law firm at the top of transactional practice rankings, with overlapping financial services, M&A, and fund formation expertise; comparable in serving bank, private equity sponsor, and sovereign clientele.
• Latham & Watkins: Largest Am Law 100 firm by revenue, with comprehensive regulatory, litigation, and transactional practices spanning life sciences, financial services, and technology sectors, directly comparable in scale and sector coverage to A&P.
• White & Case: Global Am Law 100 firm with comparable cross-border transactional, arbitration, and sovereign-advisory practices, particularly overlapping in emerging markets mandates and international trade policy work.
• Skadden, Arps, Slate, Meagher & Flom: Premier Am Law 100 firm with comparable regulatory, M&A, and litigation capabilities, particularly overlapping in corporate transactions, antitrust, and complex commercial litigation in regulated sectors like financial services.
• Cleary Gottlieb Steen & Hamilton: Elite Am Law firm with strong international regulatory and antitrust practices, including EU and emerging markets sovereign advisory, directly comparable to A&P's Brussels-based regulatory and government affairs capabilities.
• Davis Polk & Wardwell: Elite Am Law firm with deep regulatory, transactional, and enforcement practices overlapping with A&P's financial services and securities enforcement work, including cross-border sovereign mandates.

Direct peers

• Holland & Knight: Am Law 100 firm with comparable government affairs and international trade practice. Co-engaged with A&P on the South Korea MOTIE lobbying mandate alongside Hogan Lovells, evidencing direct competition on cross-border sovereign mandates and regulatory work.
• Hogan Lovells: Am Law 100 global law firm with comparable international platform (US, UK, EU, Asia) and similar government affairs and regulatory practices. Co-retained alongside Arnold & Porter by South Korea's MOTIE for US lobbying, demonstrating direct overlap in cross-border regulatory and policy mandates for sovereign clients.
• Greenberg Traurig: Am Law 100 firm where Matthew J. Douglas, a 27-year Arnold & Porter environmental/toxic tort partner, recently joined as a shareholder in Denver. Demonstrates direct competition for senior lateral talent in environmental and product liability practices.
• Norton Rose Fulbright: Global Am Law 100 firm where Christian Schultz (former A&P SEC enforcement counsel) recently joined as partner in DC. Directly comparable in cross-border regulatory and enforcement defense work, including financial services and securities enforcement practices.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/1448052
• Xx.com/arnoldporter
• Facebookfacebook.com/117157202106

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Arnold & Porter