Michael P. Lyons

Michael P. Lyons

Founding Partner

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Michael Lyons is one of the founding partners of Deans & Lyons and concentrates his practice on complex civil litigation, representing plaintiffs and defendants. Lyons has a reputation for achieving great results for his clients by displaying a mastery of the facts and law while utilizing creativity, tenacity and cutting edge technology. Lyons has represented individuals, small businesses, and Fortune 1000 corporations in a diverse array of civil litigation matters in Texas and across the country. He has tried cases before Texas juries, judges and arbitrators involving complex business disputes, construction defects, wrongful death, catastrophic personal injuries, professional liability and product liability. Lyons has recovered hundreds of millions of dollars in judgments and settlements on behalf of his clients and successfully defended complex business and tort cases where his clients were being sued for hundreds of millions of dollars.

Lyons has earned the respect of his peers through tireless efforts to help his clients. He has been recognized as a Super Lawyer by Law & Politics appearing in Texas Monthly from 2013 to the 2016 and, prior to his eligibility for this honor, was recognized as a Rising Star by the same publication in 2005 and 2008 to 2012. He was honored as a “Best Lawyer in Dallas under 40” by D Magazine in 2005 and a “Best Lawyer in Dallas” by D Magazine in 2011, 2013, 2015, and 2016. Lyons has been recognized as a member of the Million Dollar and Multi-Million Dollar Advocates Forums, and he was named a Lifetime Achievement member of America’s Top 100 Attorneys for Texas. He has attained an AV® Preeminent™ peer-review rating from Martindale-Hubbell, signifying the highest level of professional excellence based upon peer review evaluation from lawyers and judges who have observed his legal skill and ethical standards.

In addition to pursuing outstanding results on behalf of clients, Lyons has invested significant time in service of his community as a leader within the Dallas Bar Association. Lyons has served as a member for the Courthouse Committee, Law in the Schools and Community Committee, and Bench Bar Committee for the Dallas Bar Association. He is a current Co-Chair for the Judiciary Committee and past chair for the Law Day Committee for the Dallas Bar Association. In 2015, Lyons became a Fellow of the Texas Bar Foundation. In 2010, he was elected as a Fellow of the Dallas Bar Foundation, and in 2008 Lyons was recognized by Dallas CBS affiliate KTVT Channel 11 as a "Texan with Character" for his philanthropic work in the Dallas – Fort Worth Metroplex with children who were victims of abuse or neglect.

Areas of Practice

  • Business Disputes and Commercial Litigation
  • Construction Litigation
  • Personal Injury
  • Product Liability
  • Professional Liability
  • Wrongful Death

Bar Admissions

  • Texas
  • U.S. District Court, Northern District of Texas
  • U.S. District Court, Southern District of Texas
  • U.S. District Court, Eastern District of Texas
  • U.S. District Court, Western District of Texas


  • South Texas College of Law
    • J.D. cum laude - 1999
    • Honors: Order of the Lytae
    • Law Review: Corporate Counsel Review, Assistant Editor
  • The University of Texas
    • B.A. - 1995

Representative Cases

  • Obtained seven-figure judgment in representation of publicly traded company where physician group sued for $2.6MM+ over alleged breach of management agreement. All claims were dismissed by the physician group and a judgment was awarded for the defendant company plus attorneys’ fees.
  • Representation of hundreds of investors in complex securities action involving oil and gas investor scam resulting in $21.5MM disgorgement order obtained by the Securities and Exchange Commission against the perpetrators and the investor clients receiving a collective 60% interest in the oil and gas company after the perpetrators were removed through successful appointment of a Ch. 11 Trustee.
  • Obtained defense verdict after 3 week trial in electrocution case against property owner involving apartment complex electrical systems.
  • Obtained seven figure judgment against large, international insurance carrier resulting in multi-million dollar settlement stemming from denial of UIM claim involving wrongful death victim.
  • Representation of brain injury victim stemming from intoxicated and distracted driver of a commercial truck. Multi-million dollar settlement obtained.
  • Representation of the family of wrongful death victim involving negligent entrustment, hiring, retention and training. Multi-million dollar settlement obtained.
  • Successful defense of consumer electronics manufacturer in triple fatality residential structure fire involving multiple deaths.
  • Successful defense of product sourcing and retail defendant in residential house fire involving multiple children who sustained catastrophic burn injuries.
  • Member of trial team involving multiple pharmaceutical product liability claims for multinational, Fortune 50 pharmaceutical company in various venues throughout Texas and the United States; Trial co-counsel involving alleged marketing and design defect allegations in multiple trials lasting several weeks to several months.
  • Following trial, obtained seven-figure judgment for plaintiff surety in complex construction lien dispute between two national construction bond insurers.
  • Lead Plaintiffs’ counsel in a multi-party commercial construction defect case involving large national general contractor, and complex engineering and design defect allegations. Resulted in multi-million dollar settlement and one of the “Largest Texas Settlements” reported by Verdict Search in 2013.

Published Works

  • "Character Evidence, Subsequent Remedial Measures, and Offers of Settlement", How to Offer and Exclude Evidence, University of Houston CLE Program, 2008
  • "Conduct, Character and Remedial Measures–The Article IV Rules of Evidence", Advanced Evidence and Discovery, University of Houston CLE Program, 2008

Honors and Awards

  • “Best Lawyers in Dallas”, D Magazine, 2011, 2013, 2015, 2016
  • Super Lawyers, Texas, 2013 - 2016
  • Super Lawyers, Texas, 2005, 2008 – 2012
  • “Best Lawyers in Dallas Under 40”, D Magazine, 2005
  • Fellow, Dallas Bar Foundation
  • Fellow, Texas Bar Foundation
  • Top 100 Lawyers in America, Lifetime Achievement Member
  • Million Dollar Advocates Forum
  • Multi-Million Dollar Advocates Forum

Professional Associations & Memberships

  • Texas Exes, Dallas Chapter, Board of Directors, 2001 – 2007
  • The Chancellor’s Council of The University of Texas System, Member
  • State Bar of Texas, Member
  • American Bar Association, Tort and Insurance Practice Section, Member
  • Dallas Bar Association, Member
    • Law in the Schools & Community Committee, Member
    • Bench Bar Committee, Member
    • Law Day Committee, Chair
    • Judiciary Committee, Co-Chair
  • Member of the College of the State Bar of Texas
  • Texas Trial Lawyers Association, Allied Attorney Membership
  • American Association of Justice, Leadership Forum Member
  • North American Brain Injury Society, Member

Diffuse Tensor Imaging & Advanced Imaging Techniques

One of the biggest hurdles brain injury victims have in personal injury and products liability cases is quantifying the degree of injury to the jury. If a jury can’t feel or discern the extent of a person’s injuries, they are less inclined to award damages. We have effectively utilized cutting-edge advanced imaging techniques such and diffuse tensor imaging or DTI in cases involving brain injuries. With this technology, a jury can confirm that an individual has no injury and should not be awarded damages for a significant brain injury or, alternatively, such as in the case of the example provided, that the individual has suffered injuries throughout the brain. When paired with a history of trauma and an absence of some other explanation, this evidence has become the gold standard for confirming brain injuries. You can click on the player to see a 3-D rendering of the brain made by DTI.

Trial Animations

Trial animations can be incredibly impactful if used properly. Sometimes a concept or complex scenario is described, but only a picture can shed light on what really happened. Having the ability to show and explain a client’s position using trial animations is a compelling way to get the point across. Understanding the proper way to create and utilize these tools is just as important as putting together the evidence that supports them. Often times, a creative animation can be the difference in having a successful outcome at trial.

Trial Illustrations

Presenting information that a jury can see and understand is so critical to a good outcome at trial. Whether it's understanding the gravity of a particular injury or ascertaining how an accident sequence occurred, proper illustrations that call the jury, judge or arbitrator's attention to what's important in a way that is impactful is a critical component to our trial teams. Here are some examples of our trial illustrations.

View Illustrations

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