Mary Rose Alexander

Mary Rose Alexander, Managing Partner of the firm’s Chicago office, represents Fortune 500 companies in their highest-stakes litigation and trials, often in the most hostile jurisdictions in the US. Profile A nationally recognized trial lawyer, Mary Rose leverages her extensive experience to help clients navigate complex commercial litigation and trials in state and federal courts and arbitration forums across the country involving: ■ Class actions ■ Public nuisance / toxic torts / product liability and consumer fraud ■ Environmental regulations ■ Major industrial accidents ■ Energy and oil and gas contracts ■ Insurance coverage In representing clients, she draws on considerable success defending against multi-state, multi-plaintiff litigation, particularly in complex commercial matters. Mary Rose regularly garners recognition for her trial work from leading industry publications, including Chambers USA, Lawdragon, The American Lawyer, The Legal 500, Crain’s Chicago Business, Benchmark Litigation and Best Lawyers in America. Her diverse platform and unique skill set led to her appointment as the firm’s Vice Chair of both the Litigation & Trial and Environment, Land & Resources Departments. She is also the former Global Chair of the firm’s WEB Committee. Experience A sample of the disputes Mary Rose has handled includes: ■ Allergan in alleged product liability individual and class actions in the US MDL, EU, Canada, Australia, and Korea regarding textured breast implants; managing worldwide defense ■ Netflix in multiple putative class actions brought by municipalities in 13 states involving franchise taxes; multiple recent district court, appellate court, and state supreme court wins across the country ■ Dow Chemical Company in alleged public nuisance litigation brought by the City of Modesto, California relating to PCE used by multiple dry cleaners; 2022 & 2023 jury trials; secured first defense verdict in 25-year case history; a result that earned Mary Rose American Lawyer Litigator of the Week, November 2023 ■ Synergy Marine investor in Francis Scott Key Bridge allision response and investigations ■ Anadarko in a US Tax Court dispute involving the tax treatment of a US$5 billion environmental settlement; 2023 bench trial ■ Clorox in alleged public nuisance litigation regarding micro plastic in Partner Chicago E mary.rose.alexander@lw.com T +1.312.876.7672 Education Columbia University School of Law (JD, 1989) University of California, San Diego (BA, 1986) Bar Qualifications Illinois, 1990, California, 1989 Languages English Recognition Highlights “Fantastic, strategic, insightful and fights very hard for us in matters. We have a lot of confidence in her.” “Very strategic, detail-oriented and pragmatic.” “Very skilled at taking witnesses at trial, especially complex and detailed experts. She does an exceptional job in taking their testimony.” Chambers USA 2024 “Mary Rose Alexander is the best! She is creative and extremely hardworking.” The Legal 500 US 2023 “Handles high-stakes environmental litigation on behalf of a range of clients, including local authorities and companies in the chemical and energy sectors.” Chambers USA 2022 Litigation Star Benchmark Litigation 2025 Top 250 Women in Litigation Benchmark Litigation 2024 Band 1: Environmental Litigation Chambers USA 2024 Leading Lawyer – Industry Focus: Environment: Litigation Leading Lawyer ‒ Product Liability, Mass Tort & Class Action The Legal 500 US 2024 500 Leading Lawyers in America Lawdragon 2021-2025 Green 500: Leaders in Environmental Latham & Watkins operates worldwide as a limited liability partnership organized under the laws of the State of Delaware (USA) with affiliated limited liability partnerships conducting the practice in France, Hong Kong, Italy, Singapore, and the United Kingdom and as an affiliated partnership conducting the practice in Japan. Latham & Watkins operates in Israel through a limited liability company, in South Korea as a Foreign Legal Consultant Office, and in Saudi Arabia through a limited liability company. © Copyright 2025 Latham & Watkins. All Rights Reserved. In connection with this document, you agree not to share with Latham & Watkins any confidential information regarding this potential engagement unless and until an attorney/client relationship is established and agreed-upon in writing. Law Lawdragon 2023-2025 500 Leading Environmental Lawyers 1 Lawdragon 2025 Mary Rose Alexander continued the ocean; recent demurrer victory ■ Dow Chemical Company in multiple state-wide natural resource damage, product liability and nuisance litigation regarding alleged dioxane releases brought by New Jersey and numerous municipalities ■ Nalco Company in numerous class actions arising out of the Gulf of Mexico 2010 oil spill; obtained summary judgment based on preemption ■ Weyerhaeuser in multiple putative class actions / product liability and consumer fraud lawsuits involving building products following national recall; recent jury trial and appellate win ■ DTE Energy in putative class action / failure-to-warn litigation involving flooding; recent motion- to-dismiss win ■ Chevron Corporation in “Hot Fuels” multidistrict litigation involving numerous class actions; obtained complete dismissal ■ Ecolab in a statewide PFAS contamination claim asserted by the State of Michigan; successfully had Ecolab dismissed after transfer to the AFFF MDL ■ Monsanto in nation-wide public nuisance lawsuits brought by municipalities and states involving PCB contamination in various West Coast water bodies ■ SK Sawgrass in Texas multidistrict litigation arising from an industrial accident at a portfolio company ■ Syngenta in ICC arbitration involving industrial action; 2021 remote trial ■ LG Polymers India in litigation and regulatory matters arising from 2020 industrial accident in Vizag, India ■ Arizona Public Service Company in arbitration involving a coal supply contract with the Navajo Nation; obtained complete resolution