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Greg Huffman focuses his practice on antitrust, complex commercial litigation, criminal investigations, and mergers and acquisitions. He is a frequent speaker and writer on antitrust, litigation, and professional topics.


Greg has been ranked first in “The Nation’s Top 10 Antitrust Lawyers” by United States Lawyer Rankings for six consecutive years, has been named as one of three recipients nationwide for the 2013 Client Choice Awards in the Competition category by International Legal Office and Lexology, and was named as the 2012 and 2017 Dallas Litigation-Antitrust Lawyer of the Year by The Best Lawyers in America.


According to clients quoted in Chambers USA 2015, Greg is described as “brilliant” and “very strong in litigation and also has a very strong reputation for giving antitrust advice in the transactional context.” Chambers USA 2015 also named Greg one of two “Star Individuals” in the Texas antitrust category and Benchmark Litigation also selected Greg as a 2016 “Litigation Star – United States, Antitrust” and as a “Litigation Star” in the Texas antitrust category in 2012-2016. Client feedback included in “Best Law Firms” 2016 notes that Greg is “the most pragmatic antitrust attorney with whom I’ve worked” and “a value-added asset to any deal.”

Representative Matters

    • Opposing party nonsuited antitrust claims after we deposed its economic expert
    • Opposing party nonsuited antitrust claims after we appeared and sent discovery requests
    • Opposing party nonsuited antitrust class action after receipt of our motion to dismiss
    • Opposing party nonsuited class action after receipt of our motion to dismiss
    • Opposing party nonsuited class action after losing another case to us in a different jurisdiction
    • Opposing party nonsuited antitrust class action after hearing our appellate argument in another case
    • Served as defendants’ liaison counsel in a plaintiff/defendant class action involving charitable gifts; authored amendments to the Sherman Act and state laws to terminate the litigation
    • Won at trial in a monopolization case in Houston that was affirmed on appeal
    • Won a favorable award tried before an arbitrator to defeat a certified class action in Los Angeles
    • Won at trial and on appeal against the Federal Trade Commission in a Clayton Act § 7 case
    • Tried physician antitrust case before the Federal Trade Commission and obtained reversal on appeal on remedy
  • Numerous other cases tried to a favorable verdict/judgment

Honors & Affiliations


  • Top Rated Litigators, The American Lawyer, 2021
  • Chambers Global by Chambers & Partners (Competition/Antitrust); 2016
  • Chambers USA by Chambers & Partners (Antitrust); 2005-2018
  • The Nation’s Top 10 Antitrust Lawyers, United States Lawyer Rankings, 2007-2016
  • The Best Lawyers in America® by Woodward/White Inc. (Antitrust Law, Bet-the-Company Litigation, Commercial Litigation, Health Care Law, Litigation-Antitrust, Litigation-Mergers & Acquisitions); 2003-2019
  • Dallas (Antitrust, Litigation-Antitrust) “Lawyer of the Year,” The Best Lawyers in America® by Woodward/White Inc.; 2010, 2012, 2017
  • Texas Super Lawyers® by Thomson Reuters (Antitrust Litigation, Business Litigation, Criminal Defense: White Collar); 2003-2018
  • Top 100 Overall, Texas Super Lawyers® by Thomson Reuters; 2012-2013
  • Top 100 Dallas/Fort Worth Region, Texas Super Lawyers®by Thomson Reuters; 2012-2013
  • “Litigation Star – United States, Antitrust,” Benchmark: Litigation, The Definitive Guide to America’s Leading Litigation Firms & Attorneys; 2015-2016
  • “Local Litigation Star,” Benchmark: Litigation, The Definitive Guide to America’s Leading Litigation Firms & Attorneys; 2012-2016
  • 2016 Distinguished Legal Writing Award, The Burton Awards
  • 2013 Client Choice Winner (Competition – Texas), Lexology
  • Top 15 Business-Defense Lawyers, “Defenders,” Dallas Business Journal; 2008
  • Top-Notch Lawyer (Antitrust Law), “Go-To Guide,” Texas Lawyer; 2002, 2007
  • Best Personal Lawyers in Dallas (White Collar Defense), D Magazine; 2009
  • Best Lawyers in Dallas, D Magazine; 2005, 2007-2008, 2011
  • Best Business Lawyers in Dallas (White Collar Defense/Antitrust), D Magazine; 2009
  • Who’s Who Legal by Law Business Research Limited: Texas (Competition); 2007-present
  • Expert Guides: Guide to the World’s Leading Competition and Antitrust Lawyers, 2014-2015
  • “ICFM Leading Lawyers 500,” InterContinental Finance magazine; 2013
  • Albert Nelson Marquis Lifetime Achievement Award, Marquis Who’s Who, 2018


  • Fellow, American College of Trial Lawyers
  • Member, American Board of Trial Advocates
  • Member, State Bar of Texas; Chairman, Antitrust and Business Litigation Section, 1991-1992; Chairman, Lawyer Referral Service Committee, 1980-1981; Certificate of Merit, 2001; Presidential Citation, 2000; delegate to ABA House of Delegates, July 2000
  • Member, Dallas Bar Association; Secretary/Treasurer, 1981; Founding Director and Director, Antitrust Section, 1981, 1989-present; Founding Director, Business Litigation Section, 1988; Committee Chairman, 1979, 1980-1981, 1986-1987, 1999-2001; Member, Task Force on Professionalism, 1987
  • Chairman, State Unauthorized Practice of Law Committee, 1981-1984
  • Member, Supreme Court Advisory Commission on Professionalism, 1988
  • Member, Texas Board of Legal Specialization, 1974-1977
  • Charitable Donation Antitrust Immunity Act of 1997, (15 U.S.C. §§ 37-37a), primary author, 1997
  • Testified before House Committee on Business and Commerce concerning HB 1853/SB 397 (Texas Free Enterprise and Antitrust Act), April 1983
  • Fellow, American Bar Foundation
  • Fellow, Texas Bar Foundation
  • Fellow, Dallas Bar Foundation
  • President, Harvard Law School Association of Texas, 1987-1988

Education & Admissions


  • J.D., 1973, Harvard Law School
  • London School of Economics
  • B.A., 1969, with great distinction, Stanford University; Phi Beta Kappa; Honors Program; Stanford-in-France program


  • Texas
  • U.S. Supreme Court
  • U.S. Court of Appeals for the Fifth Circuit