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Dallas Civil Trial Attorneys

Dunn Sheehan LLP was founded by two lawyers who, after working together in a traditional "big firm" setting for a combined 20 years, departed from the conventional model to advance a personally tailored and straightforward approach to the practice of law that streamlines the path to a favorable resolution on the client's terms.

Our lawyers routinely handle complex cases against the largest law firms in the nation at a fair cost or on a contingent fee structure that allows our clients to take their cases to trial. Our background generates the experience necessary to aggressively represent our clients in difficult cases on a national basis.

About Our Firm

Meet the Team

  • William D. Dunn
    William D. Dunn
  • Connor G. Sheehan
    Connor G. Sheehan
  • John David ("J.D.") Blakley
    John David ("J.D.") Blakley
  • Cari Lasala
    Cari Lasala
  • Patrick K. Sheehan
    Patrick K. Sheehan
  • Blake Brownshadel
    Blake Brownshadel
  • William D. Dunn
    William D. Dunn

    In 2010, William Dave Dunn chose to leave a successful 13-year career as a partner at one of Dallas' largest and most respected law firms to become a founding partner of Dunn Sheehan LLP. Dave now applies a "light and fast" philosophy to his practice, utilizing the agility and flexibility of a small firm to provide the same high quality service to his clients, but more efficiently and at a lower cost. Read More

  • Connor G. Sheehan
    Connor G. Sheehan

    Connor devotes 100% of his practice to civil litigation. He began his career at a traditional large law firm handling business litigation cases and defending product liability and wrongful death cases. In 2010, he co-founded Dunn Sheehan LLP, where he litigates business disputes as well as plaintiff-side serious pharmaceutical, personal injury and wrongful death cases. Read More

  • John David ("J.D.") Blakley
    John David ("J.D.") Blakley

    J.D. Blakley joined Dunn Sheehan LLP in 2013 after practicing for four years at a large and prestigious law firm based in Dallas. With a primary focus on commercial litigation, J.D. has spent his career representing both plaintiffs and defendants in complex business disputes. In doing so, he has acquired a deep understanding of, and an invaluable skill set pertaining to, a wide range of litigation topics, including contract law; partnership, shareholder, and fiduciary relations; labor and employment matters; defamation, fraud and business torts; and disputes relating to trade secrets. Read More

  • Cari Lasala
    Cari Lasala

    Cari LaSala joined Dunn Sheehan LLP in 2014. Her practice focuses on commercial litigation and plaintiff-side pharmaceutical litigation. Read More

  • Patrick K. Sheehan
    Patrick K. Sheehan

    With multiple awards and over 40 years of complex civil trial experience, Patrick Sheehan has a broad range of experience in complex cases. He earned his law degree from St. Mary’s School of Law in 1975, where he graduated first in his class.
    Patrick represents both plaintiffs and defendants and has tried multiple cases to jury verdict in state and federal courts. He has tried jury cases lasting two weeks to four and a half months. His practice focuses on wrongful death and catastrophic personal injury cases, oil and gas litigation, trust and estate litigation, business torts, and business and partnership disputes. Read More

  • Blake Brownshadel
    Blake Brownshadel

    Blake spent the first seven years of his practice at the world’s largest law firm, representing both plaintiffs and defendants in complex business disputes. Under the tutelage of some of the top litigators in the country, Blake honed his advocacy skills and made business litigation in Texas state court his wheelhouse to thrive in. Blake has first-chair experience as a trial lawyer in Texas state court, taking one case to a successful jury verdict and another case to a successful bench verdict. Read More

Representation Matters
See a Few of Our Case Results

  • $3,000,000 Won $3,000,000
    Recovery in a single plaintiff pharmaceutical case
  • $3,500,000 Won $3,500,000
    Recovery in a single plaintiff pharmaceutical case
  • $5,500,000 Won $5,500,000
    Recovery in a single plaintiff pharmaceutical case
  • $7,500,000 Won $7,500,000
    Recovery in a commercial vehicle case
  • $8,500,000 Won $8,500,000
    Recovery in a product liability matter involving an off road vehicle
  • $2,000,000 Won $2,000,000
    Verdict in a business litigation case
  • Seven-Figure Settlement of Shareholder Oppression Claims
    In February 2014, obtained seven-figure settlement of shareholder oppression claims on behalf of minority stockholder.
  • Won Six-Figure Settlement of Fraud and Contract Claims
    In December 2012, obtained favorable six-figure settlement of fraud and contract claims on behalf of commercial real estate investment firm after two week jury trial and deliberations.
  • Settled Multi-Million Dollar Land Contamination Case
    In December 2013, favorably resolved a multi-million dollar land contamination case through federal court litigation with a Fortune 500 company.