Commercial Litigation

Artificial Intelligence Disputes and Investigations

Artificial intelligence (AI) and digital transformation are revolutionizing business operations across sectors, bringing both innovation and legal complexity. Our team helps clients navigate AI-related disputes and investigations while ensuring continuity. We advise across industries, including technology, health care and life sciences, consumer products, energy, and automotive, on matters including regulatory scrutiny, intellectual property protection, data security, and litigation defense. Operating at the intersection of law, technology, and policy, our team includes former regulators, enforcement officials, and leading litigators in AI and emerging tech. We’ve advised on AI washing, regulatory investigations, data governance, model training disputes, algorithmic decision-making, privacy, and cybersecurity. Ranked #1 by the Financial Times in 2025 for consistent innovation, we combine legal excellence with proprietary AI tools and deep in-house experience to deliver tailored strategies that mitigate risk and support long-term success.

Appellate and Supreme Court Litigation

Widely recognized as one of the most accomplished appellate practices in the United States (U.S.), our team has argued more than 50 cases before the Supreme Court and hundreds more across all 13 federal courts of appeals, numerous state appellate courts, and trial courts nationwide. Led by Cate Stetson and Jessica Ellsworth – two of the most respected advocates in the country - and joined by J.A. Sagar, Sean Marotta, and Katie Wellington - our team is defined by strategic precision and collaborative strength. We partner seamlessly with trial counsel to shape winning narratives, craft persuasive briefs, and deliver impactful oral arguments that drive results. Our deep bench of associates and paralegals is integral to our success. Every lawyer has clerked for an appellate judge – many for Supreme Court justices – and our associates are trusted front-line advocates, with ten having argued more than a dozen cases across multiple appellate courts. Named to the National Law Journal’s 2024 Appellate Hot List and Law360’s Appellate Practice Group of the Year, our team is committed to excellence in advocacy. Cate Stetson, one of only two women nationally ranked Band 1 for Appellate Law by Chambers USA, and Jessica Ellsworth, Law360’s 2024 Appellate MVP, anchor a practice that continues to shape precedent and policy nationwide.

Automotive Litigation

Our Litigation, Arbitration, and Employment team supports automotive and mobility clients globally through courts, tribunals, and regulatory bodies. We represent automotive companies and emerging mobility innovators, helping them to navigate complex legal challenges and reduce risk. Our clients include leading manufacturers, distributors, original equipment manufacturers (OEMs), and parts suppliers. We have a strong track record in defending class actions, including product liability and consumer claims, combining litigation expertise with deep sector knowledge. We also advise on product safety and compliance across the entire lifecycle - from research and development to end-user. In supply chain matters, we assist with disruptions caused by raw material shortages, price hikes, and force majeure events. Our team provides strategic guidance to minimize financial exposure and ensure operational continuity, drawing on extensive experience in international enforcement and crisis response.

Aviation Litigation

Our aviation litigation practice serves clients across the world, including airlines, lessors, suppliers, servicers, and manufacturers of aircraft. Our clients benefit from many of our lawyers coming from a background in public service, which includes positions as Chief Counsel of the U.S. Federal Aviation Administration (FAA), Special Assistant to the Secretary of Transportation, Special Counsel to the Administrator of the FAA, Special Assistant to a member of the National Transportation Safety Board, and Executive Assistant to the Chair of the Civil Aeronautics Board. Our clients also benefit from our close relationships with key leaders, policymakers, and agency staff at aviation-related agencies in North America, the Middle East, Europe, Asia, Africa, South America, and Australia. Our global aviation practice enables us to achieve our clients’ goals efficiently and effectively. We can advise you on issues covering every segment of the industry and provide innovative legal strategies for your toughest challenges and disputes. Our experience, track record, and understanding of the aviation business make us well-positioned to advise you. Working closely with our Regulatory and Government Relations colleagues, we provide a one-stop shop to defend clients in aviation litigation. We can advise on the varied issues in aviation litigation that may emerge when interacting with business partners, consumers, Congress , regulators, and others.

Banking and Financial Services Litigation

We approach financial services litigation with precision and perspective. Our global team, based in all major financial centers, delivers seamless, cross-border dispute resolution capabilities. We understand that even minor issues can escalate into billion-dollar exposures. That’s why clients trust us. We combine deep industry knowledge with legal insight across investment banking, derivatives, asset management, lending, trade finance, and consumer finance. Our track record includes precedent-setting cases and market-defining strategies. We are particularly strong in regulatory enforcement and civil actions involving benchmark manipulation, distressed assets, mis-selling, fraud, aviation finance, and complex structured products. Working efficiently across jurisdictions, we help clients navigate class actions, investigations, and disputes with clarity and confidence.

Civil Fraud

Civil fraud disputes are rarely confined within national borders. Allegations of fraud can escalate into multi-billion claims, complex asset recovery proceedings, and coordinated enforcement across multiple countries. We act for financial institutions, state-owned banks, corporates, insolvency practitioners and high-net-worth individuals. Our experience spans every stage of fraud disputes, from urgent injunctions and freezing orders to multi-year litigation and cross-border enforcement. We have acted in some of the most high-profile fraud cases of recent years, including JSC CB PrivatBank’s claim against its former owners, which was one of the largest fraud claims before the English courts. We also represented Eurasian Natural Resources Corporation in its long-running dispute with the United Kingdom (UK) Serious Fraud Office; these proceedings continue to shape the fraud litigation landscape. Our team has a depth of experience in disputes connected to Eastern Europe, the Commonwealth of Independent States (CIS) region, and other transitional regimes. Recognized for devising creative and commercially grounded strategies, we combine local knowledge with global coordination to deliver practical solutions in the most complex fraud cases.

Class and Collective Actions

Class and collective actions are on the rise and spreading across industries and markets around the world. What has been an ever-present threat in the U.S. is now a global business risk, with claims surging across industries and borders. In the UK, European Union (EU), and beyond, claimant firms and funders are aggressively expanding their reach, turning many companies into targets. Our exceptional Class and Collective Actions team combines unmatched experience with deep regulatory insight and local expertise to protect clients across sectors and geographies.

In the U.S., we secure the most advantageous forums in proceedings before the Joint Panel on Multidistrict Litigation (JPML) and defeat class certifications. On the rare occasions when class claims survive other challenges, we frequently defeat class claims at trial.

In the UK and EU, we have decades of experience successfully defending clients from the largest product, consumer, and competition collective actions to have come before the courts, along with environmental, social and governance (ESG) cases. Our global team understands the wider challenges that class and collective actions bring and that they frequently spread across borders. We design multijurisdictional strategies, combat adverse publicity, and achieve early dismissals. Because we understand the key issues that commonly arise in major cases, we can minimize the burden of discovery and coordinate multijurisdictional class and collective actions. With our broad national and international footprint, you can have access to a coordinated team to handle disputes seamlessly across multiple jurisdictions and forums. We counsel our clients on the latest legislative developments and help them prepare for emerging litigation risks, and domestic and international issues. Clients turn to us for our international expertise to act as coordinated counsel for complex litigation with class and multi-party actions pending in several jurisdictions globally. We have the experience, and we know your industry.

Competition Litigation

As market leaders with unrivalled breadth of practice, we advise on the most high-profile antitrust and competition litigation matters. Our expertise spans a wide range of contentious antitrust and competition issues across diverse markets and sectors, enabling us to tackle some of the most complex legal challenges. We are one of the largest and most experienced antitrust and competition litigation practices globally. With a team of skilled litigators across key jurisdictions, including the U.S., UK, the Netherlands, and Germany, we deliver seamless cross-border representation. Our integrated, coordinated approach positions us as a trusted partner in navigating complex, multinational disputes. We handle all forms of antitrust and competition litigation law claims, including cartels and price-fixing, abuse of dominance and monopolization, collective claims and class actions, injunctive and interim relief claims, merger litigation, U.S. state attorney general litigation, and many other forms of damages claims arising under competition laws.

Consumer Litigation

Consumer disputes can be complex, but our Consumer Litigation team delivers clear, tailored strategies aligned with each client’s goals. We offer end-to-end representation across product liability, commercial litigation, class actions, and more. Our industry-focused approach helps us anticipate sector-specific risks and opportunities. Whether addressing breach of contract, consumer protection, false advertising, or privacy issues, we combine legal precision with commercial insight to resolve matters efficiently. With a global team of experienced litigators, we manage disputes of any scale, from local claims to multijurisdictional litigation. Our integrated approach ensures clients benefit from the full strength of our firm, wherever they operate. We help businesses mitigate risk, protect reputation, and navigate evolving consumer regulations with confidence and clarity.

Construction and Engineering Disputes

We have deep experience in projects throughout Europe, Asia, the Middle East, U.S., and Africa. We coordinate working groups in virtually every region and have world-class capabilities in regulatory matters. We have globally recognized practitioners in construction arbitration and disputes, and are closely attuned to the energy, manufacturing and industrials sectors.

We a history of helping clients build successful projects and infrastructure, ensuring that value is maximized. Often this involves leveraging our relationships, negotiating the financing and project documents, then assisting the client through the construction phase while helping to manage costs and delay. We do this by providing highly experienced counsel to address and hopefully avoid any disputes that may arise in real time.

Contracting and Supply Chain Disputes

Supply relationships should be robust, but world events have caused many to become more fragile. We recognize that contracting and supply chain issues are becoming common sources of commercial disputes, even in sectors traditionally resistant to litigation. The underlying issues can be the termination of a supply relationship, price increases, insufficient capacities, scarcity of raw materials, as well as quality issues. Disputes around supply contracts often deal with the primary duty, a supplier’s responsibility for delivery according to its customer’s demand. In single-sourcing scenarios, disputes can quickly become business critical. We have increasingly seen threats of delivery disruption or termination, as well as situations around exploitation of market power. We regularly advise on cases of imminent interruption to the supply chain, and efforts to minimize economic and financial risks. We help avert supply disruptions through the courts, sometimes through emergency proceedings. Our team has vast experience in dealing with unwanted or unexpected terminations of supply contracts. We have extensive knowledge of applying antitrust and competition law arguments to a customer/supplier relationship and negotiating scarcity scenarios, supply disruptions through force majeure and beyond. We understand how these factors impact global supply chains. Our supply chain lawyers and seasoned litigators, combined with our deep global experience in all relevant areas, enable us to craft holistic and custom solutions. Our global team can guide you through the challenges of cross-jurisdictional, multidisciplinary and industry-specific supply chain issues, anywhere in the world.

Corporate and Securities Litigation

Corporate, securities, shareholder, and M&A disputes require a sharp, business-focused approach, whether this is in New York, Frankfurt, Singapore or anywhere in the world. Our global litigation team works with leading companies across industries, combining local insight with seamless cross-border execution. In the U.S., we represent public and private entities in securities class actions, shareholder suits, governance disputes, and fund litigation. We are driven by your business goals and powered by AI-enabled legal tech. Internationally, our lawyers are recognised for resolving post-M&A and joint venture disputes, board liability, shareholder activism, and directors’ and officers’ (D&O) risks across EMEA and Asia Pacific. We advise early to prevent litigation, and when disputes do escalate, we deliver clear and decisive outcomes. Known for navigating antitrust, data privacy, and complex corporate issues, we offer more than legal advice - we deliver confidence and strategic advantage.

Digital Assets and Blockchain

Current legislation and regulatory parameters are having to evolve to suit the unique challenges created by this sector. The comparatively unregulated nature of crypto assets makes the environment unpredictable, and this increases the associated risks. Our litigation group supports some of the biggest and most active global banks, financial institutions, and digital asset and blockchain-based companies around the world. We also help funders, individual directors, officers, and high-net-worth investors. We thrive on developing bet-the-enterprise legal strategies, disputes tactics, and regulatory and law enforcement defenses. Our experienced litigators are well-equipped to help you mitigate risks, and to resolve your most complex blockchain and digital assets disputes, whenever and wherever they arise.

Digital Disputes and Investigations

Rapid advances in technology are offering previously unimaginable opportunities for product development, business optimisation and growth. With opportunity comes complexity and risk, particularly given the recent surge in generative AI. Whether you're looking at your use of data, contracting with a third party, developing a new type of technology, or navigating the complexities of generative AI, we’ll partner with you to identify your risks and protect your opportunity in this fast-moving environment. Our experience spans across a broad range of disputes, including cyber incidents, data class actions, data protection, technology-based solutions and services, and products.

Digital, Privacy, and Cyber Disputes

Our global Data, Privacy and Cybersecurity Disputes team is widely recognized for its excellence and ability to solve complex problems for clients. The team collaborates with our top tier-ranked Data, Privacy and Cybersecurity regulatory group and leverages our deep technical and data experience in assisting clients across the litigation landscape. This includes class actions and regulatory investigations arising out of data breaches, the use of web tracking technologies, biometrics, AI, and more. We regularly represent technology companies, entertainment and media companies, sports organizations, pharmaceutical and health care providers, insurers, consumer products manufacturers, and retailers in data security and privacy class actions, as well as investigations by enforcement agencies around the world. Our team continues to handle many of the largest and most complex cybersecurity and privacy matters in the market.

ESG Litigation / Energy Disputes / Environmental Litigation

ESG-related disputes occur frequently. They often arise from environmental claims, whistleblowing complaints, supply chain risks, governance failures, or allegations of human rights abuses. For global businesses, these issues could span more than one jurisdiction and can trigger regulatory scrutiny, litigation, and reputational damage across multiple markets. We advise businesses across multiple sectors on the full spectrum of ESG, Energy and Environmental disputes. Our experience spans environmental litigation, claims tied to social and human rights issues, and governance disputes linked to corruption, whistleblowing, or board oversight. With more than 400 lawyers in our global ESG practice, we are exceptionally well positioned to deliver coordinated, multijurisdictional advice. Our team combines deep subject-matter knowledge with litigation and investigations strength, enabling clients to navigate disputes while protecting reputations and long-term value. We deliver practical solutions grounded in commercial reality in the courts, through arbitrations, or via regulatory engagements.

Financial Services Litigation

We represent some of the biggest, most active global banks and financial institutions. We find solutions to their regulatory enforcement issues, class actions, and other major litigation risks, helping them to further their strategic goals. We have worked on many of the most important cases for the industry over the last several decades, and on high profile investigations. We have represented clients in the high-profile London Interbank Offered Rate (LIBOR), foreign exchange (FX), precious metals, Panama papers, bond trading, and sanctions investigations. We regularly handle sensitive internal investigations, including whistleblowing investigations, and counsel clients on their compliance frameworks. We are truly global, with strength and depth on both sides of the Atlantic. We handle all aspects of cross-border litigation and investigations as a single firm, ensuring a seamless and coordinated approach which creates greater efficiencies for our clients. We work seamlessly with our transactional and regulatory colleagues, and we have versatile practitioners in every major financial center in the world, acting as one coordinated team with in-depth knowledge of the industry, the products (including investment banking, derivatives, wealth/private banking, asset management, lending, trade finance, and retail/consumer finance), the regulatory environment, as well as the law.

Financial Services Regulation and Enforcement

We are trusted by leading institutions to navigate the most complex and high-stakes cross-border investigations. Our exceptional team of world-class lawyers operates seamlessly across jurisdictions, delivering integrated advice through a single, unified global practice. In multijurisdictional investigations, the advantages of working with a single firm are clear, where nothing is lost in translation and clients receive coherent, coordinated, and cost-effective counsel. Our lawyers have been at the sharp end of investigations, involving all the major regulators and law enforcement agencies. Our experienced and versatile team includes former senior lawyers from regulatory bodies and government authorities in key jurisdictions, including the U.S. and the UK, bringing insight and strategic depth to every matter. We combine deep knowledge with global reach, enabling us to support clients in navigating regulatory scrutiny, reputational risk, and legal exposure with confidence and precision.

Global Regulatory Litigation – Administrative Procedure Act (APA) and Judicial Review

In today’s complex regulatory environment, companies worldwide must navigate increasingly aggressive agency action. In the U.S., where the Administrative Procedure Act (APA) serves as the primary check on federal agencies, our litigators operate at the frontline of these matters, helping clients ensure agencies act within their legal boundaries, provide adequate justification, and make consistent decisions. APA litigation is uniquely challenging, often involving fast-moving agency actions, emergency relief, and parallel proceedings in trial and appellate courts. Our team combines deep regulatory insight with courtroom and appellate experience. We represent clients across industries in challenging actions by virtually every federal agency, securing emergency injunctions when necessary and litigating overreach. Just as importantly, we help clients engage strategically during rulemaking to build administrative records that support future legal challenges. We integrate regulatory insights with U.S. litigation prowess, understanding not only the APA, but the broader regulatory ecosystems our clients operate in. We can ensure your interests are protected from both legal and policy perspectives.

Insurance Litigation

Businesses around the world rely on insurance and reinsurance to manage risk. When disputes arise, they are often high-value, complex, and business critical. Our global insurance litigation team is trusted by clients to resolve these challenges, particularly those involving high-exposure risks. We advise all participants in the insurance and reinsurance market - including insurers, reinsurers, intermediaries, and corporate policyholders - on contentious matters across multiple lines of business. Our lawyers provide strategic guidance on the presentation and handling of claims under a broad range of insurance and reinsurance contracts and represent clients in commercial disputes within the sector. We specialise in navigating the largest and most complex disputes our clients face. Drawing on deep industry experience across jurisdictions, we offer comprehensive support in litigation, arbitration, and all forms of dispute resolution. By leveraging sector expertise from market-leading teams across the firm, we deliver the highest standard of service.

Intellectual Property Litigation

Life Sciences Disputes

We offer exceptional Life Sciences disputes capabilities, combining deep sector knowledge with global reach. Our multidisciplinary team of over 500 life sciences and health care practitioners operates across 35+ offices worldwide, providing seamless support in commercial litigation, class actions, corporate, securities, and shareholder disputes, along with antitrust and employment cases, and international arbitration. We are recognized for our expertise in medical devices, digital health, biotechnology, and health care services. We regularly represent the leading industry players, having represented seven out of the ten largest pharma companies in the world. Our track record includes defending clients in high-profile product liability, data/cybersecurity, and regulatory litigation matters, as well as complex cross-border disputes. Clients benefit from our integrated approach, combining litigation, regulatory, and technical expertise to deliver creative, business-focused solutions. We provide rapid, clear, and actionable guidance under pressure. Our team provides a deep understanding of your business, your products, and the regulatory environment in which you operate. Chambers, Legal 500, and LMG Life Sciences have consistently ranked us Band 1 for Life Sciences disputes, reflecting our reputation for excellence and client service.

Pensions Litigation

Leveraging deep experience, industry insight, and a long-standing focus in dispute resolution, we simplify and resolve even the most complex challenges. We act for trustees, corporates, and public sector bodies, putting forward exceptional cross-border, multidisciplinary teams that offer a holistic view of pensions and provide strategic advice and representation. Each matter is efficiently staffed with lawyers from all relevant jurisdictions, ensuring tailored solutions that meet our clients’ specific needs. The matters we handle are often of critical importance to our clients, with financial stakes that can be substantial. While many of our cases attract public attention, just as many are resolved discreetly and successfully at an early stage, protecting our clients’ interests without unnecessary exposure. When cases need to go to trial, we handle them skillfully and authoritatively, backed by an outstanding track record at both trial and appellate levels.

Products Law

Our global Products Law practice is internationally renowned for its work in product litigation, liability, safety, and compliance for universally recognized brands in every industry sector. For decades, our practice has worked collaboratively to provide clients with a one-stop-shop service for all their products’ needs. Our global team, consisting of over 100 lawyers spread across 30 countries, covers all product sectors, meaning clients receive the most comprehensive advice through the practice’s extensive experience with technical and scientific issues in the most complex and highly regulated industries. The team is highly recognized in the product liability space for its mastery of litigation within the regulatory framework.

Real Estate Litigation

Restructuring and Special Situations Litigation

During restructuring or insolvency, recourse through the courts is often required to determine parties’ rights, or to seek creditor protection. Our global team of highly-skilled litigators manage all sides of insolvency across key jurisdictions. Whether you're a creditor, investor, debtor, or officeholder, we can help you mitigate risk and achieve swift, strategic outcomes. Having advised on restructuring and insolvency cases for decades, we can leverage our global platform to deliver pragmatic, business-focused guidance to creditors, multinational corporations, and insolvency administrators who have to navigate this complex landscape. With deep capabilities across both English and U.S. legal systems and in all major financial centers, we understand that insolvency disputes often transcend borders. These matters are inherently complex and demanding, which is why our global team is always ready to support your business through its most challenging moments.

Sanctions Disputes and Investigations

Our economic sanctions team advises clients on compliance with U.S. and non-U.S. sanctions, Office of Foreign Assets Control (OFAC) regulations, and blocking statutes while supporting legitimate business operations. Collaborating across our offices in the U.S., Europe, and China/Hong Kong, we help design proactive compliance frameworks and address emerging issues. We guide clients in identifying which affiliates and personnel are subject to sanctions and how governance structures influence exposure. Our support includes reviewing compliance programs, recommending operational changes, and securing licenses for otherwise restricted transactions. We also advise on voluntary disclosures and penalties. With daily monitoring of sanctions developments and strong agency relationships, we serve clients across industries including tech, finance, health care, and energy. We actively advise on U.S. sanctions targeting China and Hong Kong, along with navigating Chinese counter-sanctions and related legal conflicts.

State Attorneys General

State Attorneys General (AGs) have emerged as some of the most influential regulators and litigators in the U.S., leading multi-state investigations, shaping enforcement priorities, and bringing high-stakes litigation across industries. With their expanding authority, companies face unprecedented scrutiny in areas ranging from consumer protection and data privacy to AI, health care, ESG, and financial services. Our practice offers clients an exceptional advantage through a dedicated team led by former elected and senior State AG officials, including the first and twice elected Attorney General of the District of Columbia. Our team combines decades of experience in both government and private sectors with deep relationships in State AG offices nationwide. We understand how State AGs set their agendas, how investigations unfold, and particularly, how to resolve disputes effectively before they escalate. Our team approaches State AG matters with a litigation-first mindset, positioning clients for success whether through proactive engagement, negotiation, or courtroom advocacy. Our track record includes successfully defending companies in some of the most closely watched State AG investigations and lawsuits, while often helping clients avoid costly enforcement altogether.
For businesses navigating State AG scrutiny, whether a confidential inquiry or a multi-state coalition lawsuit, we deliver practical strategies, trusted advocacy, and peace of mind.