Katherine H.  Stepp

Katherine H. Stepp


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Katherine Stepp represents a national clientele of plaintiffs and defendants in complex civil litigation matters. Stepp’s practice is primarily focused on toxic tort, commercial litigation, premises liability, product liability, catastrophic personal injury, wrongful death, oil & gas litigation, and employment litigation.

Stepp joined Deans & Lyons when it was founded in 2008. Prior to that, Stepp practiced at the Dallas office of Beirne, Maynard & Parsons. Stepp has considerable trial experience in both bench and jury trial settings. She is active in a number of legal and business organizations in the Dallas area.

Areas of Practice

  • Appeals
  • Business Litigation
  • Personal Injury
  • Product Liability
  • Real Estate Litigation
  • Wrongful Death

Bar Admissions

  • Texas - 2004
  • 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
  • U.S. Court of Appeals, 5th Circuit


  • Southern Methodist University School of Law
    • J.D. - 2004
  • Chaminade University of Honolulu
    • B.A. magna cum laude - 2000
    • Major: Political and Historical Studies

Published Works

  • "Geothermal, Trespass and the Rule of Capture-A 'Hot' Topic", The Energy Law Advisor, The Institute for Energy Law of the Center for American and International Law, Volume 3, No. 2-July 2009.
  • Character Evidence, Subsequent Remedial Measures, and Offers of Settlement, University of Houston CLE Program, 2008

Honors & Awards

  • "Master Advocate" Award, SMU
  • Chief in Criminal Defense Clinic, SMU
  • Executive Director of Moot Court Board, SMU
  • Interscholastic Director of Board of Advocates, SMU
  • Programs Director of Student Bar Association, SMU, 2001
  • Dallas Association of Young Lawyers Leadership Class, 2008
  • Higginbotham American Inn of Courts, 2007 - 2008
  • Super Lawyers, Texas, 2008
  • Super Lawyers, Texas, 2009
  • Super Lawyers, Texas, 2010
  • Invitation to Speak at the SMU Geothermal Energy Utilization Associated with Oil & Gas Development Conference: Presenting on "Texas Precedence Regarding Trespass by Fracture, Rule of Capture & its Effect on the Geothermal Industry", 2009 - Present
  • Dallas Association of Young Lawyers Foundation Fellows
  • Continental Who's Who

Professional Associations & Memberships

  • State Bar of Texas
  • Dallas Bar Association, Bar None Production Company Committee
  • Dallas Association of Young Lawyers
  • Texas Young Lawyers Association
  • Institute for Energy Law, Advisory Board Member
  • The Trinity Trust Society
  • Dallas Bar Association, Mock Trial Committee
  • Dallas Bar Association, Peer Assistance Committee
  • Dallas Bar Association, Energy Law Section, Member
  • Dallas Bar Association, Corporate Counsel Section, Member
  • Dallas Bar Association, Labor & Employment Section , Member
  • Dallas Bar Association, Trial Skills Section, Member
  • American Bar Association, 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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