Mayer Brown

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Mayer Brown

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Overview

Mayer Brown LLP is a distinguished global law firm known for delivering innovative legal solutions to complex business and regulatory challenges. With a powerful international footprint and more than 1,800 lawyers across the Americas, Europe, Asia, and the Middle East, Mayer Brown combines deep local knowledge with global reach. The firm is particularly celebrated for its prowess in cross-border M&A, structured finance, international arbitration, and regulatory compliance, serving leading corporations, financial institutions, and government entities. As one of the best law firms in the world, Mayer Brown stands out for its commitment to client success, legal innovation, and integrity. Recognized on Best100LawFirms.com, Mayer Brown continues to shape the legal landscape through strategic counsel and litigation excellence.

Company Name: Mayer Brown LLP

Short Overview:
Mayer Brown LLP is a leading global law firm providing strategic legal services in complex transactional, regulatory, and litigation matters. With offices across four continents, the firm delivers cross-border legal solutions to major corporations, financial institutions, and governments. Its strength lies in combining global reach with deep local insight.

Year Established: 1881

Headquarters Address:
71 South Wacker Drive, Chicago, IL 60606, United States

Contact Information: 

  • Email: info@mayerbrown.com
  • Phone: +1 312 782 0600
  • Website URL: Mayer Brown

Mission Statement:

To deliver exceptional legal services that help clients achieve their business objectives while upholding the highest standards of professionalism, innovation, and integrity across global markets.

Firm Overview:

Mayer Brown LLP is a global law firm uniquely positioned to advise the world’s leading companies and financial institutions on their most significant legal matters. With more than 1,800 lawyers in 27 offices spanning the Americas, Asia, Europe, and the Middle East, Mayer Brown combines local market knowledge with a global perspective. The firm is deeply respected for its performance in high-profile cross-border mergers and acquisitions, complex litigation, project finance, regulatory compliance, and international arbitration.

Mayer Brown’s client base includes Fortune 500 companies, multinational corporations, sovereign governments, and global financial institutions. The firm’s commitment to client-focused service, collaborative problem-solving, and legal innovation sets it apart as one of the best law firms in the world.

With industry-leading capabilities in sectors such as banking and finance, infrastructure, technology, energy, and insurance, Mayer Brown delivers end-to-end legal strategies that meet the evolving demands of a globalized economy. The firm is particularly distinguished for its pioneering work in structured finance and securitization, having advised on some of the most significant transactions in the market.

Beyond its legal acumen, Mayer Brown maintains a culture of diversity, social responsibility, and pro bono commitment. It fosters long-standing client relationships built on trust, transparency, and consistent results. This rare combination of global scale and personal service has earned Mayer Brown a prestigious position on Best100LawFirms.com, reflecting its enduring influence, exceptional talent, and unmatched client impact in the legal profession.

Number of Offices: Mayer Brown operates 27 offices globally, located in major legal and financial centers including Chicago, New York, Washington, D.C., Los Angeles, Houston, Charlotte, Palo Alto, London, Paris, Brussels, Frankfurt, Hong Kong, Beijing, Shanghai, Singapore, Hanoi, Ho Chi Minh City, Dubai, and São Paulo, among others. This global presence enables the firm to deliver cross-border legal solutions with local insight and precision.

Employee Breakdown:

  • Number of Partners: Approximately 500

  • Number of Lawyers/Attorneys: Approximately 1,800

  • Number of Legal Support Staff: Estimated 1,200

  • Other Staff: Estimated 1,000 administrative, operations, and business services professionals.

Primary Languages Spoken:
Mayer Brown provides legal services in a wide range of languages to support its global clientele. The primary languages spoken across its offices include English, Mandarin Chinese, Cantonese, Spanish, French, German, Portuguese, Vietnamese, Japanese, Korean, and Arabic. This multilingual capability ensures effective client communication and legal support across jurisdictions in North America, Latin America, Europe, Asia, and the Middle East.

Awards and Recognitions:

  • Award Name: Global Elite Law Firm of the Year
  • Year Received: 2025-2026
  • Awarding Body: Best100LawFirms.com
  • Description: Selected as a Global Elite Law Firm of the Year by Best100LawFirms.com for its unmatched performance in cross-border legal transactions, structured finance, and global litigation. Mayer Brown’s consistent excellence in delivering client-first legal strategies across continents reflects its position at the pinnacle of international legal practice.

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  • Award Name: Law Firm of the Year – Securitization & Structured Finance
  • Year Received: 2025
  • Awarding Body: IFLR (International Financial Law Review)
  • Description: Recognized for its preeminence in global structured finance transactions, including market-first securitization deals spanning the U.S., Europe, and Asia.

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  • Award Name: International Arbitration Firm of the Year
  • Year Received: 2025
  • Awarding Body: Chambers and Partners
  • Description: Honored for outstanding performance in high-value international arbitration cases with cross-border dimensions and complex multijurisdictional issues.

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  • Award Name: Top 10 Most Innovative Law Firms
  • Year Received: 2025
  • Awarding Body: Financial Times Innovative Lawyers Report
  • Description: Named for its technology-driven legal service models and forward-thinking approaches to global client needs.

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  • Award Name: Best Global Law Firm – Client Service
  • Year Received: 2025
  • Awarding Body: BTI Consulting Group
  • Description: Ranked among top firms globally for delivering superior client experience and responsiveness, based on independent client interviews.

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  • Award Name: Asia-Pacific Law Firm of the Year
  • Year Received: 2025
  • Awarding Body: Asian Legal Business
  • Description: Acknowledged for regional leadership in M&A, infrastructure, and energy projects throughout Asia-Pacific markets.

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Global Legal Excellence, Defined by Professionalism

Why is it one of the Best 100?

At Best100LawFirms.com, we are honored to recognize Mayer Brown LLP as one of the world’s most elite law firms. Its inclusion among the Best 100 Law Firms globally is the result of meticulous evaluation across performance, client satisfaction, and cross-border capability. What sets Mayer Brown apart is not only its breadth of global legal services but also its unmatched ability to deliver results in complex, high-value matters with precision and professionalism.

The firm stands as a global legal leader in structured finance, cross-border mergers and acquisitions, international arbitration, and financial regulatory compliance. Its legal teams handle sophisticated transactional and litigation challenges for top-tier clients, including Fortune 100 corporations, global banks, and sovereign governments. Mayer Brown’s strength lies in its capacity to scale services across jurisdictions without compromising on quality—a rare capability in today’s legal market.

At its core, Mayer Brown remains focused on one objective: helping clients succeed in the most challenging legal landscapes. For that reason, and many more, we proudly feature Mayer Brown LLP on Best100LawFirms.com as a Global Elite Law Firm—a designation that reflects its lasting impact on the legal industry.

George Tumanishvili,
Founder of Best100LawFirms.com,
Former Dean, Faculty of Law, Ilia State University

Practice Areas

Overview of Key Achievements in Practice Areas:

Mayer Brown LLP offers one of the most comprehensive and strategically aligned legal service portfolios among the top 100 law firms in the world. The firm is especially recognized for its strength in banking and finance, structured finance and securitization, cross-border mergers and acquisitions, international arbitration, and regulatory enforcement. Its practices span virtually every major industry, including energy, infrastructure, insurance, real estate, private equity, and technology.

One of Mayer Brown’s most distinguished capabilities is in structured finance, where it has consistently led groundbreaking securitization deals across the U.S., Europe, and Asia. The firm is often first-to-market in evolving financial structures, backed by deep regulatory knowledge and cross-border execution excellence. Mayer Brown also leads in litigation and dispute resolution, particularly in complex commercial, white-collar, and international arbitration matters involving multibillion-dollar stakes.

The firm’s M&A practice handles high-profile transactions for global corporations, providing end-to-end guidance across jurisdictions, with a focus on regulatory risk, tax structuring, and antitrust compliance. Its real estate, project finance, and infrastructure teams are among the most trusted advisors on transformative, capital-intensive projects worldwide.

Mayer Brown’s integrated global platform enables its lawyers to deliver seamless, cross-border legal strategies. This is especially vital in areas such as data privacy and cybersecurity, employment law, environmental regulation, and financial services compliance, where regulatory landscapes differ drastically by region.

Moreover, the firm’s commitment to innovation is evident in its investment in legal tech, AI-assisted compliance tools, and digital platforms that enhance client service delivery—reinforcing its status as one of the best law firms in the world for both traditional and modern legal needs.

 

  • Banking and Finance Law
  • Structured Finance and Securitization Law
  • International Arbitration – Commercial
  • International Arbitration – Governmental
  • Mergers and Acquisitions Law
  • Litigation – Securities
  • Litigation – Antitrust
  • Litigation – Banking and Finance
  • Litigation – Insurance
  • Regulatory Enforcement (SEC, Telecom, Energy)
  • Tax Law
  • Corporate Governance Law
  • Corporate Law
  • Real Estate Law
  • Energy Law
  • Infrastructure Law
  • Environmental Law
  • Employment Law – Management
  • Insurance Law
  • Privacy and Data Security Law
  • Intellectual Property Law
  • Arbitration
  • Product Liability Litigation – Defendants
  • Technology Law

News / Updates, Articles, and Industry Insights

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Questions and Answers
From the Best Law Firm - Mayer Brown

Mayer Brown LLP earned its place on Best100LawFirms.com through a consistent demonstration of global legal excellence, innovation, and cross-border capacity. Its ability to navigate complex transactional and litigation landscapes, while delivering tailored legal strategies to some of the world’s most influential organizations, reflects a level of operational sophistication matched by few.

The firm’s unique combination of deep industry insight, multijurisdictional experience, and cutting-edge technology solutions makes it an essential partner to Fortune 500 companies, financial institutions, and government entities. Mayer Brown is not just a law firm—it’s a trusted global adviser delivering strategic solutions in an increasingly complex legal world.

Its recognition is grounded in verified client satisfaction, top-tier legal outcomes, and a proven record of high-stakes success. Whether leading billion-dollar securitizations or resolving multi-continent disputes, Mayer Brown stands at the pinnacle of the global legal profession.

Mayer Brown’s litigation teams are internationally recognized for their precision, responsiveness, and courtroom success. The firm represents clients in high-stakes disputes across financial services, commercial sectors, technology, and regulatory environments, combining strategic litigation insight with unmatched global reach.

Its litigation practice is particularly notable for its integrated approach—bringing together experts in antitrust, securities, white-collar defense, and international arbitration to develop comprehensive legal strategies. Mayer Brown’s litigators are known for their ability to manage crisis-level disputes, resolve regulatory scrutiny, and navigate complex jurisdictions seamlessly.

What truly distinguishes the firm is its consistent track record of winning precedent-setting cases while minimizing risk for its clients. Mayer Brown’s litigation success stems from rigorous preparation, collaborative thinking, and an unwavering focus on client priorities—a model that continues to set the standard for global legal performance.

Mayer Brown is widely regarded as a market leader in structured finance and securitization, having pioneered some of the world’s most complex and high-value financial transactions. The firm’s legal teams regularly advise on deals involving asset-backed securities, mortgage-backed securities, CLOs, and synthetic securitizations, earning accolades from top industry publications.

Its clients include major investment banks, financial institutions, asset managers, and issuers seeking creative, compliant, and scalable deal structures. Mayer Brown’s lawyers are renowned for combining technical regulatory knowledge with innovation, resulting in financial products that withstand scrutiny and deliver value.

Through a globally integrated practice that spans New York, London, Hong Kong, and other financial hubs, the firm ensures seamless deal execution across borders. This level of coordination, combined with deep market experience, secures Mayer Brown’s reputation as a powerhouse in global structured finance.

As a top-tier international M&A adviser, Mayer Brown plays a pivotal role in facilitating complex cross-border transactions for some of the world’s most influential companies. The firm counsels on mergers, acquisitions, joint ventures, and divestitures, delivering end-to-end legal support from deal structuring through to post-closing integration.

Mayer Brown’s M&A lawyers are known for their commercial acumen, sector-specific knowledge, and ability to anticipate regulatory and antitrust risks. They advise across key industries such as technology, energy, healthcare, and financial services, ensuring clients receive bespoke solutions tailored to regional and sectoral challenges.

The firm’s global footprint—spanning 27 offices across key financial markets—enables it to provide synchronized legal counsel in multi-jurisdictional deals. This combination of reach and execution excellence positions Mayer Brown as a go-to firm for clients pursuing high-value, cross-border growth opportunities.

Mayer Brown is at the forefront of advising clients on the legal challenges and opportunities posed by artificial intelligence (AI), machine learning, and emerging technologies. The firm provides counsel on regulatory compliance, intellectual property, data protection, algorithmic accountability, and AI ethics across multiple jurisdictions.

Recognizing the transformative impact of AI on industries from finance to healthcare, Mayer Brown helps companies assess AI-related risks while maximizing innovation. Its cross-disciplinary teams bring together legal expertise in technology law, privacy, cybersecurity, and regulatory policy, offering clients forward-looking strategies that align with evolving global standards.

Mayer Brown also contributes to international dialogues on AI regulation, working with industry groups and policymakers to shape responsible AI governance frameworks. This proactive, strategic approach reinforces the firm’s leadership in tech law and positions it as a premier adviser in the digital age.

Mayer Brown has long-standing relationships with some of the largest global banks, investment firms, and insurance companies. Its financial services group is known for advising on banking regulations, derivatives, structured products, enforcement actions, and capital markets transactions.

The firm’s attorneys are deeply embedded in financial regulatory developments across the U.S., EU, and Asia, giving clients an insider-level understanding of emerging rules and compliance requirements. Mayer Brown’s ability to anticipate regulatory changes and help clients navigate them strategically is a defining strength.

Whether it’s navigating complex Basel III frameworks or structuring innovative investment vehicles, the firm consistently provides actionable, results-oriented legal guidance. This trusted role in the global financial ecosystem is a testament to Mayer Brown’s industry depth and legal reliability.

Mayer Brown provides comprehensive legal support to sponsors, lenders, and developers involved in energy and infrastructure megaprojects around the globe. The firm advises on project structuring, finance, regulatory approvals, environmental law, and public-private partnerships (PPPs).

Clients benefit from Mayer Brown’s cross-disciplinary experience in energy regulation, construction law, environmental compliance, and international finance. The firm has played a key legal role in some of the most ambitious energy and infrastructure projects in Asia, Latin America, and Africa.

Its global presence and deep understanding of project finance law make Mayer Brown an invaluable partner for both early-stage structuring and long-term operational success. The firm’s work helps deliver essential infrastructure while mitigating legal and operational risk.

Mayer Brown’s international arbitration team is globally ranked for its sophisticated handling of investor-state disputes, commercial arbitration, and public international law cases. The firm regularly appears before leading tribunals such as ICSID, ICC, LCIA, and UNCITRAL.

Clients turn to Mayer Brown for its strategic litigation planning, sector-specific expertise (particularly in energy, construction, and finance), and proven ability to deliver favorable outcomes in multi-billion-dollar disputes. The firm is especially strong in representing both states and multinational corporations.

Its arbitration professionals operate in a seamless global model, working across jurisdictions with fluency in local laws and treaty obligations. This comprehensive and responsive approach places Mayer Brown at the forefront of international dispute resolution.

Mayer Brown offers end-to-end counsel on data protection, cybersecurity incident response, compliance, and regulatory investigations. The firm supports companies in navigating global privacy regimes such as the GDPR, CCPA, and emerging AI governance frameworks.

The cybersecurity practice works closely with clients during high-risk events such as data breaches, ransomware attacks, and regulatory audits, providing both crisis response and litigation defense. The firm also assists in drafting compliance programs and data transfer mechanisms tailored to the client’s sector and jurisdiction.

Mayer Brown’s ability to blend technical acumen with practical legal strategies makes it a go-to firm for companies facing complex digital challenges. This is especially critical for sectors like finance, healthcare, retail, and technology.

Mayer Brown serves a diverse array of industries, with particular strength in financial services, energy and natural resources, technology and telecommunications, insurance, real estate, manufacturing, and infrastructure development.

The firm’s deep sector knowledge allows its lawyers to anticipate risks, shape transactions, and resolve disputes with an understanding of the commercial context. Clients across industries rely on Mayer Brown for strategic counsel that aligns with business realities.

This industry-aligned approach—combined with legal excellence—helps Mayer Brown build long-term partnerships that extend beyond transactions or disputes, adding value throughout the corporate lifecycle.

Mayer Brown has made diversity, equity, and inclusion (DEI) a cornerstone of its culture and operations. The firm supports inclusive hiring, leadership development, and career advancement initiatives to promote diversity at every level.

Mayer Brown’s programs include attorney affinity groups, mentoring initiatives, and scholarship programs for diverse law students. The firm regularly reports on its DEI progress and collaborates with clients and industry partners on best practices.

This commitment is not just internal; Mayer Brown actively supports DEI in the broader legal profession and community through pro bono service and policy advocacy. Its actions reflect a deep and ongoing investment in equitable legal practice.

Mayer Brown embraces legal innovation as a critical driver of client service. The firm has invested heavily in legal technology platforms, AI-powered compliance tools, e-discovery systems, and document automation to improve service delivery and efficiency.

Innovation at Mayer Brown is guided by real client needs. Its proprietary solutions streamline workflows, reduce legal costs, and enhance responsiveness in complex matters. These advancements allow Mayer Brown to deliver value in ways that traditional legal models cannot.

By integrating technology into every aspect of legal practice—from client onboarding to litigation strategy—Mayer Brown leads the way in modern, data-informed lawyering for the digital age.

Mayer Brown has a long-standing commitment to pro bono legal service and community engagement, handling thousands of pro bono hours annually across its global offices. The firm supports causes such as access to justice, civil rights, refugee protection, and nonprofit advocacy.

Lawyers are encouraged to take on meaningful pro bono matters, often working with legal aid organizations, international NGOs, and advocacy coalitions. This work is recognized as a core professional obligation and a valued part of firm culture.

Beyond pro bono, Mayer Brown contributes to social impact through philanthropy, public interest partnerships, and sustainability initiatives—reflecting a broader vision of legal practice as a force for good.

Mayer Brown’s tax team is consistently ranked among the most sophisticated in the world, known for advising on cross-border tax structuring, transfer pricing, M&A taxation, and tax controversy. The firm serves both multinational corporations and financial institutions.

Its lawyers have deep technical expertise and often have backgrounds in government, academia, and Big Four advisory firms, giving clients nuanced perspectives on complex tax issues. Mayer Brown’s global footprint ensures that international tax advice is coordinated and compliant.

Whether it’s advising on a multibillion-dollar acquisition or representing clients in tax disputes, Mayer Brown’s tax practice is built on accuracy, creativity, and strategic alignment with business objectives.

To request legal consultation with Mayer Brown LLP, prospective clients can reach the firm through its official website at www.mayerbrown.com. The site includes detailed contact information for all offices and practice areas.

You may also email the firm directly at info@mayerbrown.com or call its main line at +1 312 782 0600 for U.S. inquiries. Mayer Brown has regional contacts available for Asia, Europe, and Latin America to ensure localized communication.

Whether you’re seeking legal support on a cross-border transaction, dispute resolution, or regulatory compliance, Mayer Brown’s team is equipped to provide strategic and timely counsel tailored to your needs.

140+ Years Of Experience In the Legal Field

Global Perspective. Local Insight. Exceptional Results

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