Michael J. Mazzone



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Education and Clerkships

J.D., Suffolk University Law School, 1983

College of Arch. and Urban Planning, University of Michigan, 1978

B.S., Business Administration, University of South Carolina, 1977





North Dakota

Court Admissions

U.S. District Court for the Eastern District of Louisiana

U.S. District Court for the Eastern District of Texas

U.S. District Court for the Western District of Louisiana

U.S. District Court for the District of North Dakota

U.S. District Court for the Northern District of Texas

U.S. District Court for the Southern District of Texas

U.S. District Court for the Western District of Texas


Michael J. Mazzone, co-chair of the Litigation Practice Group, is an accomplished trial lawyer who has tried jury cases against prominent trial lawyers in Texas, Louisiana and New Mexico, and has handled cases pending in courts in North Dakota, Mississippi and Montana. Michael represents energy companies in environmental contamination, indemnity and toxic tort cases. He also represents office building owners and medical office building owners, industrial tenants, developers and landlords, landowners and homebuilders, lenders and brokers, and energy companies in a wide range of construction litigation/arbitration and real estate disputes.

Michael is board certified in civil trial law by the Texas Board of Legal Specialization.

Ranked by Chambers USA, Chambers and Partners, as a leading lawyer in environment law in Texas (2015-2021), clients describe Michael as “practical, knowledgeable and down-to-earth. He doesn't overreact, and he takes a very reasoned approach to everything... he is the epitome of a good litigator; he doesn't depend on fireworks, he just gets up and does a good job."

Michael has made presentations on trial advocacy, arbitration and litigation at oil and gas industry conferences, bar association seminars, the Texas Environmental Superconference and the University of Texas Law School.

As an arbitrator, Michael is a member of the American Arbitration Association's National Panel of Construction Arbitrators where he is regularly called on to preside over numerous construction arbitration matters and has been a speaker at the AAA's National and Regional Panel Retreats, which are seminars providing training to AAA arbitrators.

For five years, Michael taught in the trial advocacy program at the University of Houston Law School as an adjunct professor of law, and he has served on the editorial board of the Houston Lawyer magazine, a publication of the Houston Bar Association. He oversees the firm’s Volunteer Prosecutors Program in which lawyers in the firm try misdemeanor jury trials for the cities of Houston and Arlington.


Chambers USA 2020

Chambers USA Recognizes 58 Haynes and Boone Lawyers

58 Haynes and Boone lawyers spanning 17 practice areas are featured in the 2020 edition of the Chambers USA legal directory published by Chambers & Partners.

Professional and Community Activities

  • American Board of Trial Advocates (ABOTA)
  • American Arbitration Association
  • Louisiana State Bar Association
  • Houston Bar Association
  • State Bar of North Dakota
  • State Bar of Texas
  • Texas Oil & Gas Association

Professional Recognition

  • Recognized by Chambers USA, Chambers and Partners, as a leading lawyer for Environment (Texas), 2015-2021
  • Recognized in The Best Lawyers in America, Woodward/White, Inc., in Commercial Litigation, 2015-2021
  • Recognized in Legal 500 U.S., 2019-2020
  • Recognized in Texas Super Lawyers, Thomson Reuters, for Civil Litigation Defense, 2009-2020; Environmental Litigation; Construction Litigation, 2015-2016
  • Martindale Hubbell® Law Directory with a Peer Review Rating of AV® Preeminent™

Selected Publications and Speeches

  • “Texas Environmental Law,” co-author, Volumes 45-46, Chapter 30 Torts, Thomson Reuters, 2020-2021.
  • “Texas Environmental Law,” co-author, Volumes 45-46, Chapter 30 Torts, Thomson Reuters, 2019-2020.
  • “Litigation Alleging Personal Injury or Property Damage from Fracking,” speaker, Rocky Mountain Mineral Law Foundation’s Special Institute on the Law of Fracking, Westminster, Colorado, January 23, 2019.
  • “Recent Developments in Nuisance Law,” speaker, 31st Annual Energy Law Institute for Attorneys and Landmen, Houston, Texas, August 30, 2018.
  • “Texas Environmental Law,” co-author, Volumes 45-46, Chapter 30, Thomson Reuters, 2017 and 2018.
  • “Recent Developments in Nuisance Law,” presenter, 29th Annual Texas Environmental Superconference, Austin, Texas, August 3, 2017.
  • “What’s New in Nuisance,” presenter, Association of Corporate Counsel, South/Central Chapter, Oil & Gas Working Group, San Antonio, Texas, May 22, 2017.
  • “Handling Oil & Gas Nuisance Cases Amid the Hysteria Over 'Fracking',” presenter, Texas Alliance of Energy Producers 2017 Annual Meeting, Wichita Falls, Texas, April 25-26, 2017.
  • “What’s New in Nuisance,” presentation to ExxonMobil Law Department, Houston, Texas, April 12, 2017.
  • “What’s New in Nuisance,” presentation to University of Texas Law School Class, Austin, Texas, April 3, 2017.
  • “Client Selection and Control,” Presenter, 6th Annual Advanced Trial Strategies Course hosted by the State Bar of Texas, February 9, 2017.
  • “Trying Oil & Gas Nuisance Cases Amid the Hysteria Over Fracking,” Presenter, 15th Energy Litigation Conference hosted by the Center for American and International Law, Houston, Texas, November 3, 2016.
  • "Letters of Intent," Speaker, Client Presentation, Houston, Texas, October 24, 2016.
  • "Nuisance is a Legal Injury, Not a Cause of Action - A Waltz Across Texas Nuisance Law," co-author, Lexology, July 22, 2016.
  • "Thinking Fundamentally about Judicial Review -- A Book Review," author, Judicature magazine, Summer 2016.
  • "Litigation Trends," panelist, Water Acquisition and Management for Oil & Gas Development: Legal and Regulatory Requirements, Houston, Texas, April 7, 2016.
  • "Hot Topics in Nuisance," presentation to XTO Energy Law Department, Fort Worth, Texas, December 1, 2015.
  • "The Energy Sectors Environmental Challenges," panelist, 5th Annual Compliance and Ethics Summit, Noble Energy, Inc., Houston, Texas, November 19-20, 2014.
  • "Differing Results in Recent Nuisance Cases Against Oil and Gas Operators," co-author, Texas Lawyer, September 4, 2014.
  • “What is Going on Down There? Hydraulic Fracturing Issues,” panelist, 32nd Annual Water Law Conference, Las Vegas, Nevada, June 4, 2014.
  • “Technology and In-House Counsel,” conference co-chair, Corporate Counsel Institute, Suffolk University Law School, Boston, Massachusetts, October 4, 2013.
  • “Comparative Law Forum,” speaker, Shell Global Litigation Conference, New Orleans, Louisiana, September 19, 2013.
  • “Potential Obstacles to Natural Gas Development,” program co-developer and moderator, The General Counsel Forum, Houston Chapter 2nd Quarterly Event, Houston, Texas, April 17, 2013.
  • "American Law and Jurisprudence on Fracing," co-presenter with Andy Weissman, United States Energy Association Policy Series, Membership Briefing, Washington, D.C., January 30, 2013.
  • "In-House from the Inside," conference co-chair, Corporate Counsel Institute, Suffolk University Law School, Boston, Massachusetts, September 14, 2012.
  • "Too Much at Stake to Shut Down Fracing," Oil & Gas Financial Journal, August 10, 2012.
  • "Hydraulic Fracturing Litigation," 58th Annual Rocky Mountain Mineral Law Institute, July 19-21, 2012, Newport Beach, California.
  • "Non-Technical Risks in Projects and Other Developments," program developer and moderator, The General Counsel Forum, Houston Chapter 3rd Quarterly Event, June 20, 2012, Houston, Texas.
  • "An Analysis of Fracking Developments," panelist, Haynes and Boone Webinar, March 8, 2012.
  • "Changing Times Bring Conflict With Surface Owners," The American Oil and Gas Reporter, December 6, 2011.
  • "Recent Litigation Related to Oil and Gas Drilling," Better Than Barnett: New Developments in the Legal and Regulatory Issues in the Eagle Ford Shale, October 18, 2011, Houston, Texas.
  • "Oilfield Litigation: 'How the Grinch Stole Christmas,'" 23rd Annual Texas Environmental Superconference, August 4-5, 2011, Austin, Texas.
  • "American Law and Jurisprudence on Fracing," with Thomas Kurth, Mary Mendoza, and Christopher Kulander, Rocky Mountain Mineral Law Foundation Journal,Vol. 47, No. 2, 2010.
  • "Hydraulic Fracturing – The Legal Issues," Texas Environmental Law Journal’s First Annual Symposium: The Legal and Environmental Impacts of Extracting Gas from Shale, October 29, 2010, Austin, Texas.
  • "Hydraulic Fracturing - The Legal Issues," 3rd Annual Unconventional Gas International Conference, October 5-7, 2010, Fort Worth, Texas.
  • "Current Operating Regulations and Future Trends," ALM’s 9th Annual Gas Shales Summit, June 2-3, 2010, Houston, Texas.
  • "Assessing the Claims Asserted in the Global Warming Debate," presented to the Emerson Unitarian Universalist Church, January 10, 2010.

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