Haynes and Boone, LLP

What Haynes and Boone, LLP does

Haynes and Boone, LLP is a Texas-rooted international law firm founded in 1970 and headquartered in Dallas (firmographic primary city: Austin), operating as a privately held limited liability partnership. The firm employs more than 1,200 people across 22 offices in the United States, the United Kingdom (London), Mexico (Mexico City), and China (Shanghai representative office). It serves large enterprises — including ExxonMobil, Halliburton, AT&T, the National Football League, Nucor, Omnicare/CVS Health, and IVI RMA North America — alongside middle-market clients in healthcare, construction, consumer goods, digital assets, and advanced technology such as quantum computing. Engagement is partner-led and conducted through direct enterprise field sales rather than intermediated distribution channels.

The firm's service portfolio spans litigation, corporate/M&A, intellectual property (including ranked patent prosecution), tax, restructuring, finance, energy and natural resources, digital assets and cryptocurrency, and emerging areas such as carbon capture, utilization, and storage (CCUS) and fertility care. Patent prosecution is a flagship capability, with the firm ranked 2nd among 250 US patent prosecution firms by LexDana in 2026 and 14 attorneys individually recognized by IAM Patent 1000. The firm does not develop proprietary technology products; it operates Harvey (an external legal-AI platform) as internal infrastructure for document summarization, data extraction, due diligence, and drafting, and serves as a design partner on Harvey's Command Center AI oversight product alongside other Am Law-equivalent firms.

The revenue model is professional services fees billed on a matter-by-matter basis; pricing is quote-based and non-public. M&A throughput is the most visible proxy for deal flow, with more than 500 M&A transactions completed in the past five years and aggregate deal value exceeding $50 billion. Distribution is direct partner-led engagement; laterals and partner additions drive organic capacity expansion, exemplified by the Charlotte office growing from a 2019 launch to 30 attorneys and 13 staff. The firm is also distinguished by workplace-culture infrastructure (HB Well wellness program, HB Building Leaders) that supports both retention and lateral hiring.

Name

Haynes and Boone, LLP

Legal name

Haynes and Boone, LLP

Website

https://haynesboone.com

Company type

Private

Founded year

1970

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Haynes and Boone is a Texas-founded international law firm with 1,200+ employees and 22 offices across the US, UK, Mexico, and China, providing litigation, M&A, intellectual property, and energy-related legal services to Fortune 500 enterprises and middle-market companies.

Ownership category

akta.pro rank

Product category

Legal Services

NAICS

Offices of Lawyers (541110), Legal Services (5411)

SIC

Services-Legal Services (8111)

akta.pro primary industry

Mergers & Acquisitions (M&A) & Securities Law (BPAHAAAI)

Keywords

• Corporate legal services
• Commercial litigation
• Mergers and acquisitions
• Intellectual property law
• Energy law

Headquarters

HQ city

Austin

HQ country

United States

HQ region

North America

Offices20 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Legal Services — Professional Fees: Haynes Boone generates revenue through fees for legal services including litigation, M&A advisory, intellectual property, energy transactions, and regulatory compliance. The firm has handled more than 500 M&A transactions in the last five years with aggregate value exceeding $50 billion.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels8 records

Core offering

Haynes and Boone, LLP is an international corporate law firm providing full-service legal counsel across litigation, corporate/M&A, intellectual property, tax, energy (including carbon capture/CCUS), digital assets, and regulatory compliance. The firm serves large enterprises and middle-market companies through 22 offices in the US, UK, Mexico, and China, and has handled more than 500 M&A transactions in the last five years with aggregate value exceeding $50 billion.

Product overview

Haynes and Boone, LLP is a full-service international law firm operating as a single integrated legal services platform rather than a modular software product. The firm offers comprehensive legal services across multiple practice areas including Litigation, Corporate/M&A, Intellectual Property, Tax, Energy (including Carbon Capture/CCUS), and Digital Assets. The HB Well wellness program supports employee wellbeing. The firm leverages technology including the Harvey AI platform for document processing, and maintains offices across the US, London, and Shanghai. Practice areas are delivered through collaborative teams rather than standalone product modules.

Differentiator

Problem solved

Functional benefit

Brands

• HB Well: Global wellness initiative offering resources, programs, trainings, and confidential support to all 1,200+ firm employees
• HB Building Leaders
• The Legal Landscape
• Wellness in Law

Products and services

• Litigation Services

Quantifiable outcome

• 500+ M&A transactions with aggregate value exceeding $50 billion in the last five years
• +3 more outcomes

Named customers13 records

Segments5 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability2 records

Partnerships

Eight partnerships are on record, tiered core and minor.

• HarveycoreStrategic or Co-development Partner · 21 May 2026Haynes Boone served as a design partner in the development of Harvey's Command Center oversight platform, which enables law firms and legal teams to monitor AI usage, track adoption trends, and benchmark against anonymized peer data from over 1,500 global deployments. The firm collaborated with Harvey on shaping the product's functionality and is entering early-access availability.
• Foley & LardnercoreStrategic or Co-development Partner · 21 May 2026Foley & Lardner served as a design partner with Harvey for the Command Center AI oversight platform, alongside Haynes Boone and other design partners.
• Clayton UtzcoreStrategic or Co-development Partner · 21 May 2026Clayton Utz served as a design partner with Harvey for the Command Center AI oversight platform.
• Rajah & TanncoreStrategic or Co-development Partner · 21 May 2026Rajah & Tann served as a design partner with Harvey for the Command Center AI oversight platform.
• DentsucoreStrategic or Co-development Partner · 21 May 2026Dentsu served as a design partner with Harvey for the Command Center AI oversight platform.
• Delta Gold Technologies PLCcoreOthers · 14 April 2026Delta Gold Technologies PLC appointed Haynes Boone as global intellectual property counsel to support its patent protection strategy in the quantum computing space. The firm, ranked second among 250 US patent prosecution law firms by LexDana, will work with Delta's research partners including the University of Toronto and Penn State.
• Omnicare (subsidiary of CVS Health)minorImplementation/ SI/ Consulting Partner · 1 April 2026Haynes Boone served as legal advisor to Omnicare in its court-supervised sale process with GenieRx Holdings LLC as the stalking horse bidder. Advisors to Omnicare also included Jenner & Block LLP, Houlihan Lokey, and Alvarez & Marsal.
• Publishers and Author Groups (challengers of Texas READER law)minorImplementation/ SI/ Consulting Partner · 4 November 2025Haynes Boone successfully challenged the Texas READER law requiring booksellers to assign sex-content ratings to books in public schools, winning a permanent injunction. The firm is now seeking $1.94 million in legal fees under federal civil rights fee-shifting provisions.

Scale indicators6 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Baker McKenzie: Global full-service law firm of comparable scale (~$3B revenue, 13,000+ staff) with extensive cross-border M&A, energy, and IP practices. Directly comparable on international footprint and middle-to-large-cap transaction work.
• Hogan Lovells: International full-service law firm with strong energy, life sciences, and regulatory practices. Comparable to Haynes Boone on cross-border M&A, energy transition work, and enterprise client base.
• Norton Rose Fulbright: Global law firm with deep Texas roots (Houston/Dallas) and strong energy, finance, and cross-border practices. Highly comparable given overlapping geographic and sector focus.
• DLA Piper: Global full-service firm with comparable revenue scale, broad transactional practice, and significant cross-border M&A capability. Direct competitor for middle-market and enterprise work.
• Squire Patton Boggs: International law firm of similar scale with strong energy, financial services, and M&A practices. Closely comparable in middle-market transaction focus and energy sector depth.
• Foley & Lardner: Mid-sized full-service law firm of comparable scale with overlapping health care, IP, and energy practices; also a Harvey AI design partner, making it a direct comparable on technology adoption and practice mix.

Broad incumbents

• Latham & Watkins: Larger global law firm (AmLaw 3, ~$5B+ revenue) competing with Haynes Boone on enterprise M&A, securities litigation, and energy matters. Operates in overlapping spaces but at a larger scale and premium positioning.
• Kirkland & Ellis: Largest law firm by revenue globally, dominant in M&A and private equity. Competes with Haynes Boone on large M&A mandates, particularly middle-market PE-backed deals.
• Sidley Austin: Large international law firm with strong M&A, securities, and energy practices. Comparable on ExxonMobil-class securities litigation and cross-border transactions.
• White & Case: Global law firm with strong cross-border M&A and energy practices, particularly in emerging markets and LNG transactions where Haynes Boone also operates.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights7 records

Customer concentration

• Xx.com/haynesboone
• YouTubeyoutube.com/channel/UCZR-5K6g1LBGp8IeT3yMubg
• Facebookfacebook.com/haynes-and-boone-llp-170251900381
• LinkedInlinkedin.com/company/haynes-and-boone-llp
• Instagraminstagram.com/haynesboone

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 Haynes and Boone, LLP