Diamond McCarthy

What Diamond McCarthy does

Diamond McCarthy LLP is a U.S.-based law firm founded by Allan B. Diamond in 1999/2000, headquartered in Houston, Texas, and operating across six U.S. offices (Houston, Dallas, Los Angeles, New York, Denver, and Washington D.C.). The firm practices complex commercial litigation and international dispute resolution, with dedicated service lines in International Dispute Resolution (under ICC, LCIA, ICSID, AAA/ICDR, UNCITRAL, HKIAC, SIAC, and SCC rules), Bankruptcy/Business Insolvency/Restructuring (Chapter 7 and 11 trustee and receiver work), Complex Commercial Litigation (including business divorce and shareholder disputes), High Stakes Litigation, Intellectual Property (patent, trade secret, copyright, trademark, IPR/PGR proceedings), Alternative Dispute Resolution, and a proprietary Corporate Asset Affirmative Recovery (CAAR) practice. Industry sector groups cover Energy and Natural Resources, Healthcare and Life Sciences, and Real Estate.\n\nThe firm serves sovereign governments, Fortune 500 and FTSE 100 corporates, financial institutions, and high-net-worth individuals on bet-the-company, cross-border, and high-stakes matters, with 100+ jurisdictions of global client representation and 35%+ of active matters involving international parties. Documented case outcomes include $2.5B+ ICSID claims pursued against the Republic of Zambia, $1B+ in Marinduque v. Barrick Gold environmental litigation, $225M+ AAA/ICDR arbitration awards defended, $100M+ recovered for the Howrey LLP bankruptcy estate, $350M+ pursued on behalf of Latin American investors in InverWorld bankruptcies, and an award-winning Olaplex trade secret and patent infringement jury verdict.\n\nDiamond McCarthy operates on a partner-driven staffing model in which senior partners staff every matter, generating revenue through hourly, retainer, contingent, and hybrid fee arrangements on multi-year engagements, plus court-appointed fiduciary and trustee fees. The firm has no productized offering, no online self-serve path, and no external capital — it is a privately held limited liability partnership led by Managing Partner Allan B. Diamond and Administrative Partner Paul Berry. Marketing relies on CLE programming, bar association leadership, academic and trade publications, and earned media rather than paid advertising, with growth driven by lateral partner hires and a local counsel network anchored by honorary COMBAR membership in the U.K.

Name

Diamond McCarthy

Legal name

Diamond McCarthy LLP

Website

https://diamondmccarthy.com

Company type

Private

Founded year

2000

Operating status

Operating

Headcount range

51–100 employees

Short description

Diamond McCarthy LLP is a U.S. commercial litigation and cross-border arbitration boutique founded in 1999/2000, headquartered in Houston with six U.S. offices. It serves sovereigns, Fortune 500/FTSE 100 companies, and financial institutions on bet-the-company matters.

Ownership category

akta.pro rank

Headquarters

HQ city

Houston

HQ country

United States

HQ region

North America

Offices6 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Professional Services - Hourly and Contingent Legal Fees: Revenue from legal services billed to clients on hourly, retainer, contingent, or hybrid fee arrangements typical of complex commercial litigation, arbitration, and bankruptcy/restructuring engagements. Matters often span multi-year engagements with substantial dollar values (e.g., $1B+ amount in controversy across active matters).
2. Fiduciary and Trustee Fees: Revenue from serving as Chapter 11 trustee, Chapter 7 trustee, receiver, foreign liquidator, and litigation trust counsel in major insolvency and Ponzi-scheme matters (e.g., Howrey LLP, Grail Semiconductor, Equipment Acquisition Resources, Appalachian Fuels, Shale Synergy).

Pricing tiers

Go-to-market motion3 records

Distribution channels3 records

Marketing channels6 records

Core offering

Diamond McCarthy LLP is a U.S. law firm that delivers high-stakes litigation, international arbitration, and bankruptcy/insolvency representation for sovereign governments, Fortune 500/FTSE 100 companies, financial institutions, and high-net-worth individuals. The firm operates through seven core practice areas — International Dispute Resolution, Bankruptcy/Business Insolvency/Restructuring Representation, Complex Commercial Litigation, Corporate Asset Affirmative Recovery, High Stakes Litigation, Intellectual Property, and Alternative Dispute Resolution — supported by sector-focused teams in Energy and Natural Resources, Healthcare & Life Sciences, and Real Estate. Engagements are partner-driven, sourced through direct enterprise relationships, bar association referrals, and a co-counsel network spanning 100+ jurisdictions.

Product overview

Diamond McCarthy LLP is a U.S.-based law firm offering legal services through seven core practice areas — International Dispute Resolution, Bankruptcy, Business Insolvency, and Restructuring Representation, Complex Commercial Litigation, Corporate Asset Affirmative Recovery, High Stakes Litigation, Intellectual Property, and Alternative Dispute Resolution — supported by three industry sectors (Energy and Natural Resources, Healthcare & Life Sciences, and Real Estate). The practices operate as coordinated service lines rather than a unified product platform: the International Dispute Resolution practice, for example, leverages the firm's bankruptcy and insolvency litigation experience, while the Intellectual Property practice feeds into the Corporate Asset Affirmative Recovery initiative. The firm is anchored by U.S. offices in Dallas, Denver, Houston, Los Angeles, New York, and Washington D.C., and extends its reach through dedicated regional-matter capabilities covering Africa, Asia Pacific, Canada, the Cayman Islands, Europe, Latin America, and the United Kingdom.

Differentiator

Problem solved

Functional benefit

Products and services

• International Dispute Resolution Cross-border litigation and international arbitration practice handling disputes under ICC, LCIA, ICSID, AAA/ICDR, SIAC, HKIAC, SCC, and UNCITRAL rules for private parties, sovereign states, and state entities across energy, mining, finance, telecommunications, construction, and infrastructure. The practice features on-the-ground experience in 100+ jurisdictions and includes expertise in Section 1782 discovery and arbitral award enforcement and vacatur.
• Bankruptcy, Business Insolvency, and Restructuring Representation Representation of debtors, creditors, trustees, receivers, liquidators, creditor committees, ad hoc committees, secured lenders, and 363 asset purchasers in Chapter 7 and Chapter 11 proceedings, workouts, and restructuring matters. Includes sub-practices in Bankruptcy and Insolvency Litigation, Fiduciary and Receiver Representation, and Professional Liability Litigation, with particular focus on Ponzi scheme matters (e.g., Howrey LLP, Grail Semiconductor, Equipment Acquisition Resources).
• Complex Commercial Litigation Complex commercial dispute resolution covering Antitrust, Breach of Contract, Business Divorce – Shareholder & Partnership Disputes, Directors and Officers Liability Litigation, Fiduciary Litigation, and Financial Services Litigation. The practice represents clients including Purdue Pharma, Stoli, Steward Health, and Edgemere in major bankruptcy litigations.
• Corporate Asset Affirmative Recovery Practice Proprietary program helping legal departments protect valuable business assets, supply chains, revenue streams, and market position, and manage underperforming business relationships through affirmative recovery actions. The practice is built around a novel method architecture for systematic asset protection and recovery.
• High Stakes Litigation High-stakes litigation practice representing clients in bet-the-company matters across federal and state courts, including representation in matters with $1B+ amount in controversy.
• Intellectual Property IP litigation and counseling covering patent litigation (including IPR and PGR proceedings before the USPTO), trade secret misappropriation, copyright infringement, trademark and trade dress litigation, IP-related commercial disputes, and IP monetization. Active representation includes patent infringement for diabetes management and glucose monitoring technology, augmented reality gaming patents, and hard-drive trade secret cases.
• Alternative Dispute Resolution U.S. domestic arbitration and mediation services, with firm attorneys acting as neutral arbitrators and mediators in complex business and employment disputes and counseling clients on ADR process selection.
• Energy and Natural Resources Sector Legal services focused on the energy and natural resources industry, including oil and gas, mining, and power/renewable energy disputes, transactions, and arbitration. The sector team supports investor-state arbitration, production license disputes, and concession and expropriation claims.
• Healthcare & Life Sciences Sector Legal services for healthcare and life sciences clients, including intellectual property litigation and licensing in biotech, pharmaceuticals, and medical devices (e.g., diabetes management and glucose monitoring technology patent infringement work).
• Real Estate Sector Legal services covering real estate disputes, partnership/shareholder conflicts involving real estate investment partnerships, tenants-in-common arrangements, and related litigation. Includes AAA international arbitration for complex real estate development disputes (e.g., Lehndorff Companies representation).

Quantifiable outcome

• $45 million ICC international arbitration award enforced across Cayman Islands, BVI, SDNY, and District of Massachusetts
• +10 more outcomes

Named customers21 records

Segments8 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Five partnerships are on record, tiered core and major.

• COMBAR (Commercial Bar Association of England, Wales and Scotland, NA Division)coreOthersHonorary membership for select Diamond McCarthy team members in COMBAR, the most prestigious group of commercial barristers in the U.K. (members include Queen's Counsels, senior and junior barristers, and judges of the High Court of London, appellate courts, and Supreme Court of the U.K.). Provides deep ties to U.K. barristers and access for cross-border disputes throughout the United Kingdom.
• Local Counsel Network (global, 100+ jurisdictions)coreImplementation/ SI/ Consulting PartnerDiamond McCarthy draws on a network of locally-licensed lawyers in jurisdictions worldwide to deliver cross-border matters. The firm uses local counsel relationships in UK, EU, Africa, Asia Pacific, Canada, Cayman Islands, Latin America, CIS, and Middle East to provide advice and advocacy under all major international arbitration rules.
• U.S. Department of Justice (DOJ)coreOthersDOJ appointed Diamond McCarthy's Managing Partner Allan Diamond as the Chapter 11 Trustee for the Howrey LLP law firm bankruptcy estate — one of the largest law firm bankruptcies in U.S. history. Recovered upwards of $100 million for the bankruptcy estate. Reflects longstanding government confidence in the firm's insolvency and fiduciary capabilities.
• Cayman Islands Joint Official Liquidators (multiple appointments)majorImplementation/ SI/ Consulting PartnerGo-to firm for Cayman Islands Joint Official Liquidators for cross-border insolvency and financial distress litigation, including a billion-dollar hedge fund fraud and multibillion-dollar Parmalat-related claims pursued in MDL proceedings in S.D.N.Y.
• Provincial Government of Marinduque, PhilippinesmajorOthersGlobal lead litigation counsel against Barrick Gold for environmental cleanup costs and damages of approximately $1 billion related to one of the world's largest toxic environmental disasters; took issues to U.S. Supreme Court, 9th Circuit, and Supreme Court of the Philippines.

Scale indicators7 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Latham & Watkins: Global AmLaw 10 firm with a top international arbitration practice and elite restructuring group. Direct competition for cross-border disputes, energy mandates, and complex bankruptcy work.
• Baker Botts: Houston-founded AmLaw firm with deep energy and international arbitration practices. Natural incumbent peer given shared Houston base and overlap in energy-sector cross-border disputes.
• King & Spalding: Global AmLaw 50 firm with a top-tier international arbitration and cross-border litigation practice and strong Houston presence. Competes for the same Fortune 500/sovereign clients but offers full-service scale.
• Freshfields Bruckhaus Deringer: Global Magic Circle firm with premier international arbitration, public international law, and cross-border insolvency practices. Competes for sovereign-state and FTSE 100 mandates Diamond McCarthy targets.
• Vinson & Elkins: Houston-based AmLaw firm with a leading energy disputes and international arbitration practice, plus strong restructuring capability. Direct incumbent competition for energy-sector and bankruptcy mandates.
• White & Case: Global AmLaw 10 firm and one of the world's leading international arbitration practices, with owned offices across Diamond McCarthy's target jurisdictions. Competes for the largest cross-border mandates but with substantially deeper resources.
• Kirkland & Ellis: Global AmLaw leader in restructuring and bankruptcy litigation, including major Chapter 11 trustee and creditor-side representations. Competes for the Howrey-style mega-bankruptcy engagements that anchor Diamond McCarthy's fiduciary practice.

Direct peers

• Quinn Emanuel Urquhart & Sullivan: Largest litigation-only global firm, with deep cross-border arbitration and commercial litigation practices. Direct competitor for complex commercial litigation and international arbitration mandates from Fortune 500 clients.
• Susman Godfrey: Houston-based litigation boutique renowned for high-stakes commercial trials and bet-the-company matters. Closest comparable on size, geography, and bet-the-company trial positioning, though less focused on cross-border insolvency and fiduciary work.
• Boies Schiller Flexner: Litigation-focused firm with strong cross-border and arbitration capability, representing sovereigns, financial institutions, and high-net-worth clients in bet-the-company matters. Direct peer in cross-jurisdictional dispute resolution.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/dmcllp
• Facebookfacebook.com/diamondmccarthyllp

Revenue estimate

Valuation estimate

Number of profiles

Profiles26 records

Subsidiaries4 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 Diamond McCarthy