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William P. Butterfield

Hausfeld lost a dear friend and trusted colleague when partner William P. Butterfield passed away on Tuesday, December 13, 2016. Bill was an outstanding and accomplished lawyer, whether as an advocate, teacher, or scholar. He was a true gentleman and deeply respected by all who knew him. He will be sorely missed by the entire Hausfeld family, and we are grateful for the invaluable contributions that he made to the firm. For any client-related inquiries, please contact Brian Ratner at 202-540-7155 or We invite those who knew Bill to share their remembrances with us at

Bill Butterfield’s initial career as a prosecutor led to his interest in finding information that would help his clients prove their cases. His passion for problem-solving in large cases (finding the important information within millions of electronic records) and creating out-of-the-box solutions, led to his pioneering work in the field of electronic discovery. These skills made Bill uniquely suited to provide unparalleled services to clients, always with the goal of providing sensible solutions to his clients’ needs.

As partner at Hausfeld, Bill chaired the firm’s Financial Services Practice Group, and concentrated on financial services and antitrust litigation. He was also an internationally recognized authority on electronic discovery. In over 30 years of legal practice, Bill represented governmental agencies, brokerage firms, corporations, directors and officers, attorneys and investors in private litigation over securities, commodities, antitrust and consumer claims, and in investigations commenced by the Securities and Exchange Commission. He also defended clients in bankruptcy adversary proceedings and commercial litigation. Additionally, Bill served as a leader in several legal think tanks, taught law, and wrote and spoke frequently on legal topics. Bill had a rating of AV®, the highest rating available in Martindale-Hubbell’s peer review rating system. In 2016, he was named by Super Lawyers as a top Antitrust lawyer in Washington, D.C. He was also recognized for his e-discovery expertise by Chambers USA: America’s Leading Lawyers for Business, Chambers Global, and Global Competition Review's - Who's Who Legal.

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