Bill has represented clients and tried individual and aggregated cases in state and federal courts across the country. He serves as national and regional counsel to manufacturers involved in recurring litigation, including manufacturers of tobacco products, silica products and beverage alcohol.

In the international arena, Bill also represents and consults with clients on product liability matters in Europe, Latin America, Asia and the Middle East. As international coordinating counsel for multinational corporations, Bill has advised clients on individual cases, class actions and administrative claims in more than 25 countries. Bill trains international counsel to handle specialized cases, oversees legal pleadings and addresses evidentiary issues in foreign courts. Between 2004 and 2006, Bill served as managing partner of the firm's office in Geneva, Switzerland.

Bill also focuses on law reform and public policy, working with multinational companies, industry associations and law reform organizations. Bill is well-versed in class action procedures in civil law countries and advises stakeholders on class action laws being adopted worldwide. He is co-author of an annual chapter on "Class Action Developments Overseas" in Product Liability Litigation: Current Law, Strategies and Best Practices. He also prepared a U.S. Chamber Institute for Legal Reform report on law reform in Latin America, in addition to co-authoring two articles on Mexican class action law in the September 6, 2011, issue of Law360 and the September 30, 2011, issue of The Federalist Society's Class Action Watch newsletter. On June 13, 2012, he spoke at a meeting of the Center for Studies of Economic and Social Rights in Sao Paulo, Brazil, and published an article titled "Class Actions: The North American Experience."

Publications and Presentations

William Crampton, Following Each Other’s Lead: Law Reform in Latin America (U.S. Chamber Institute for Legal Reform 2014). 

Harvey L. Kaplan, William J. Crampton and Marc E. Shelley, Chapter 7: Class Action Developments Overseas, Product Liability Litigation: Current Law, Strategies and Best Practices (PLI 2013, 2012, 2011, 2010, and 2009). 

William Crampton, Class Actions: The North American Experience, Center for Studies of Economic and Social Rights Meeting (Sao Paulo, Brazil), June 13, 2012.

William Crampton and Silvia Kim, Class Actions - Mexican Style, Law360, Sept. 6, 2011.

William Crampton and Silvia Kim, Piecing Together the Puzzle of Mexican Class Actions, Class Action Watch (Federalist Society for Law & Public Policy Studies), Sept. 30, 2011, at 1.