Diane R. Hazel

Diane R. Hazel

dhazel@lrrc.com vCard
303.628.9545 office
303.623.9222 fax
1200 Seventeenth Street
Suite 3000
Denver, CO 80202

Diane Hazel is an Associate in Lewis Roca Rothgerber Christie’s Litigation practice group. Diane has significant experience achieving successful outcomes for clients in industries as diverse as insurance, energy, retail and industrial products, pharmaceuticals, and health care.

Diane focuses on managing risk and resolving disputes efficiently and effectively for her clients. She represents companies in business litigation, class actions, and government investigations. Diane specializes in antitrust litigation and counseling, and has worked on a wide range of antitrust matters, including MFNs, market allocation, price fixing, group boycotts, reverse payments, product hopping, refusals to deal, bundling, and joint ventures.

Prior to joining the firm, Diane was with Hunton & Williams in Washington, DC. She was also an attorney in the Bureau of Competition at the Federal Trade Commission, where she investigated and prosecuted antitrust matters in the health care and pharmaceutical industries.

Professional Experience

  • Lewis Roca Rothgerber Christie LLP, Associate, 2016- present
  • Hunton & Williams LLP, Associate, 2014-2016
  • Fulbright Scholar in Competition Law, U. S. Fulbright Program, 2013-2014
  • Attorney, U.S. Federal Trade Commission, Bureau of Competition, Health Care Division, 2010-2013
  • Staff Consultant, Ernst & Young, 2005-2007 


Representative Matters

  • Defended health insurer in multidistrict class action litigation claiming antitrust violations under Section 1 and Section 2 of Sherman Act
  • Defended health insurer in federal cases alleging state tort claims and federal and state antitrust claims
  • Represented large energy company as a third party before Federal Trade Commission in merger investigation
  • Represented pro bono client in post-conviction review in Maryland state court
  • Prosecuted and investigated alleged violations of the U.S. antitrust laws
  • Counseled various clients on antitrust and competition matters

Related News

DeWald, Freeman share John P. Frank Pro Bono Attorney of the Year Award
59 attorneys earn recognition for providing more than 50 pro bono hours in 2016
Former FTC attorney joins Lewis Roca Rothgerber Christie
Diane R. Hazel joins firm's Litigation practice group in Denver


  • Panelist, Patent Settlement Agreements: Impact on Antitrust Enforcement Demystified, April 13, 2016
  • Panel Discussant, Competition in Healthcare, 7th Annual Conference on Competition Law, Economics & Policy, Johannesburg, South Africa, 2013
  • Lecturer, Writing Effective Heads of Argument at the University of Namibia Law Faculty, 2013


  • Author, "Tying Arrangements: Do Your Pricing Policies Pass Muster Under the Antitrust Laws?," USLAW, Fall 2016
  • Author, "Competition in Context: The Limitations of Using Competition Law as a Vehicle for Social Policy in the Developing World," 37 Houston Journal of International Law 275, 2015
  • Author, "Litigating with class: Considering a potential framework for class actions in Namibia," 6 Namibia Law Journal 3, 2014
  • Author, ""Let the Signer Beware" Is Not the End of the Story," Namibia Consumer News, 2014
  • Author, "Competition Commission of South Africa Initiates Private Healthcare Market Inquiry," ABA International Antitrust Bulletin, 2013
  • Author, "The Economics of Rising Poultry Prices and Dairy Shortages," Namibia Consumer News, 2013
  • Contributor, "Antitrust Issues Involving Intellectual Properties," ABA 2012 Annual Review of Antitrust Law Developments, March 2013
  • Author, "From Theory to Real World, AHLA Antitrust Practice Group," Panel Summaries from DOJ and FTC Workshop on Most-Favored-Nation (MFN) Clauses and Antitrust Enforcement and Policy, September 2012
  • Contributor, "ABA Health Care and Pharmaceuticals Committee Recent Developments," June 2012, December 2012, August 2013

Other Info


J.D., cum laude, Georgetown University Law Center, 2010
B.S., magna cum laude, Wake Forest University, 2005

Bar Admissions

Colorado, 2010
Washington, DC, 2012