Daniel I. Booker Photo

Dan is a trial lawyer and a business counselor in antitrust and trade regulation and in an array of corporate governance and commercial matters, class actions, arbitrations and lawsuits.  He was firmwide Managing Partner of Reed Smith LLP from 1992 until 2001.  During his tenure, Reed Smith grew dramatically and became a global partnership.

For more than 20 years, Dan has been listed among The Best Lawyers in America.  He was named a Pittsburgh "Lawyer of the Year" five times in separate specialties (2011-2015).  Currently, he appears in the categories of Antitrust Law, Bet-the-Company Litigation, Commercial Litigation, Corporate Law and Litigation–Antitrust.  Dan has been recognized by Chambers USA, The US Legal 500, and Pennsylvania Super Lawyers as one of America's leading antitrust lawyers (2003-2022).  In 2016, he received the Lifetime Achievement Award of The Legal Intelligencer.


  • University of Chicago Law School, 1971, 法学博士, Articles and Book Review Editor of Law Review; Order of the Coif
  • University of Pittsburgh, 1968, 学士

  • 哥伦比亚特区
  • 宾夕法尼亚州

  • U.S. Supreme Court
  • Court of Appeals - District of Columbia
  • All State and Federal Courts - Pennsylvania

  • Academy of Trial Lawyers of Allegheny County
  • American Bar Association – Past Chair of the Antitrust Section Civil Practice and Procedure Committee; Associate Editor, Antitrust Magazine
  • Allegheny County Bar Association – Past Chairman of the Antitrust and Class Action Committee
  • Judicial Council of Pennsylvania
  • District of Columbia Bar Association – Vice Chair of the Antitrust Committee
  • Pennsylvania Bar Association
  • Pennsylvania Lawyers Fund for Client Security – Chair
  • University of Chicago Law School – Member of the Visiting Committee (2008-2015)
  • Serves on the boards of directors of the Pittsburgh Parks Conservancy (former Chair), and former Co-chair of The Committee for Mellon Square) and of the Pittsburgh Civic Light Opera (former Chair, and Founding Chair of CLO Academy of Musical Theater and of the CLO Cabaret Theater)  
  • Served as an officer or director of numerous for-profit business and not-for-profit community organizations, including RTI International Metals, Inc., the Allegheny Conference on Community Development (Executive Committee), the Pittsburgh Glass Center, the Greater Pittsburgh Council of the Boy Scouts of America, United Way of Southwestern Pennsylvania, the Community Investment Fund of the Mon Valley Initiative, the Pittsburgh Regional Alliance (Chairman), the Regional Air Service Partnership (Chairman), the Duquesne Club, the HYP-Pittsburgh Club (President), the American Civil Liberties Union, Penn’s Southwest Association (President), Océ-USA Holding, Inc., and HERC Development, Inc.
  • Served for many years as a member of the Allegheny County Democratic Committee


  • Selected through peer review for inclusion in The Best Lawyers in America© for Antitrust Law, 2003-2024, Bet-the-Company Litigation, 2006-2024, Commercial Litigation, 1993-2024, Corporate Law, 2006-2024, and for Litigation - Antitrust, 2022-2023. He also received the Best Lawyers™ "Lawyer of the Year" award in Pittsburgh in 2011 for Antitrust Law, in 2013 for Corporate Law, in 2014 for Antitrust Law, and in 2015 for Litigation - Antitrust.
  • Ranked in Chambers USA as 'Senior Statespeople' for Pennsylvania Antitrust and Pennsylvania Pittsburgh & Surrounds Litigation: General Commercial, 2003-2024.
  • The US Legal 500 – Dan has been included in the area of Mergers, Acquisitions and Buyouts within Antitrust - Northeast.
  • Selected for inclusion in the Pennsylvania Super Lawyers list for Antitrust Litigation, 2004-2021.