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Professional Liability When the result means everything, turn to Lyons & Simmons, LLP

Professional Liability Attorneys in Dallas

We Handle All Aspects of Malpractice Cases

Lawyers, engineers, accountants, and architects are among “professionals” whom people trust to perform specialized services for some of the most important matters in their lives. The law says professionals must meet minimum standards of care in the rendering of their professional services. Sometimes, a contract leads to litigation. Sometimes, a general contractor fails to properly implement the designed specifications provided by an engineer or architect. Sometimes, an engineer fails to approve a design in accordance with ordinances. All of these situations can invariably lead to litigation. We are here to help.

Our team of Texas professional liability attorneys has over 100 years of experience handling cases involving professional liability across the widest range of engineers, architects, accountants, lawyers, and other professionals. Cases involving allegations of malpractice often require the review and approval of another professional in the same field before a lawsuit can proceed. We understand the specific statutes, cases, and guidelines that govern professional conduct and utilize a vast array of proven and respected experts to identify issues where they exist and properly frame the issues for a judge, jury, or professional board to understand.

Advocating for Professionals

Our attorneys have handled multiple high-value cases stemming from allegations of not only medical and attorney malpractice, but those involving real estate agents, securities brokers, engineers, and more. We know what kind of work, evidence, and expert testimony is necessary to see a contentious professional liability case through to the end. Contact us to discuss your professional liability case today.

Our attorneys handle malpractice cases involving professional industries such as:

  • Attorneys
  • Architects
  • Engineers
  • Real estate brokers
  • Insurance agents
  • Securities professionals
  • Medical professionals (doctors, nurses, and other healthcare professionals)
  • Hospitals, healthcare centers, and retirement homes

Our Case Results

When the Result Means Everything, Trust Our Team


  • $860 Million Wrongful Death: Crane Collapse
  • $109.5 Million Gas Explosion: Burn Injuries
  • $70 Million Wrongful Death: Negligent Security / Operations
  • $60 Million Wrongful Death: Worksite Explosion
  • $37.5 Million Wrongful Death: Trucking Crash
  • $33.1 Million Wrongful Death: Oilfield Accident

Why Choose Lyons & Simmons?

  • Customized Legal Strategies

    No two cases are exactly alike. We provide each of our clients with customized legal strategies and litigation solutions tailored to their unique needs.

  • Aggressive Representation

    Our highly skilled trial lawyers are fearless about going to battle for our clients. When the opposition pushes back, we push back harder. We are determined to end your case with the best possible result. 

  • A National Reputation

    Our firm has successfully tried life-altering wrongful death and personal injury cases throughout Texas and nationwide. We have earned a reputation for taking on—and winning—complex, high-exposure cases.

  • Client-Focused Attention

    As a boutique law firm, you receive personalized attention from attorneys with the resources you would expect from a large law firm. Our mission is to provide representation on par with, if not better than, that of any corporation and give you the best chance to win in the civil justice system.

Let Us Make A Difference

Lyons & Simmons Is Here to Help

When you have been injured, every second counts. Speak with one of our nationwide trial attorneys today.

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Our Reviews

Committed to Protecting Your Rights


    "They led with kindness and genuine concern"
    In a time that was filled with pain, uncertainty and fear, the Lyons & Simmons team made it clear that our only job was to focus on healing while they dealt with everything else. They led with kindness and genuine concern, and we would not hesitate to
    - Cathy W.
    "They fought tirelessly on my behalf"
    What really makes Lyons and Simmons unique is their commitment to securing the best possible outcome for their clients. They fought tirelessly on my behalf, advocating for the compensation and support I deserved.
    - Adam H.
    "Our family will always be grateful for our experience with Lyons & Simmons!"
    During a long period of uncertainty and difficulty, it was great to have them on my side to provide a sense of comfort and confidence. Our family will always be grateful for our experience with Lyons & Simmons!
    - Steven B.
    "I had a whole team of warriors for me (at trial) and they were amazing."
    It feels good to know someone cares about your situation, someone cares about you as a person.
    - Neva R.
    "I couldn't have found a better law firm to represent me"
    I don’t think I could have found a better law firm to represent me because I really needed someone to…go to bat for me. And was going to have that fire. And that’s what they showed.
    - Wendy J.
    "Lyons and Simmons was incredible."
    You instantly feel the compassion, the security, protection, and you know that you're in the right place.
    - Nate V.
    "Lyons & Simmons you can trust."
    Get somebody you can trust. Lyons & Simmons you can trust.
    - Jessie A.
    "I got a wonderful result."

    They're a firm that believes in getting the most for the family. They're just good people.

    - Dianna W.