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Stewart Hyer Thomas

Attorney Profile

Top Rated Business Litigation Attorney in Dallas, TX

Hallett & Perrin, P.C.
1445 Ross Avenue, Suite 2400
Dallas, TX 75202
Phone: 214-922-4114
Fax: 214-922-4142
Selected to Super Lawyers: 2004 - 2005
Licensed in Texas Since: 1987
Practice Areas: Business Litigation, General Litigation
Attorney Profile

Stewart Hyer Thomas is a highly respected civil trial attorney at Hallett & Perrin, PC.  Mr. Thomas represents clients throughout the country in a variety of complex matters from the firm’s offices in Dallas. Mr. Thomas majored in political science and government at The University of The South and graduated in 1984 with a Bachelor of Arts. His legal education was obtained at The University of Texas at Austin School of Law,  where he was awarded his Juris Doctor in 1987.

Mr. Thomas has represented both plaintiffs and defendants in a varied litigation practice that has encompassed contract breaches, disputes among family members, business breakups, intellectual property infringement, overseas asset repatriation, business torts, securities violations, and real estate issues. He has also provided advice and counsel to wealthy clients and their family members, acting as their de facto general counsel in a variety of complex matters. Mr. Thomas’s successful track record and high degree of ethics have earned him justifiable recognition from his fellow members of the bar, including an AV Preeminent* peer-review rating through Martindale-Hubbell.

Mr. Thomas was a partner at a prominent Dallas-area firm before merging it with Hallett & Perrin, P.C., in January 2010. Admitted to practice in Texas since 1987, he is also admitted to practice before the U.S. District Courts for all districts of Texas as well as before the U.S. Court of Appeals for the 5th Circuit. Mr. Thomas is a life fellow in both the Texas Bar Foundation and the Dallas Bar Association, and he is active in several community organizations as well.

*AV®, AV Preeminent®, Martindale-Hubbell Distinguished and Martindale-Hubbell Notable are certification marks used under license in accordance with the Martindale-Hubbell certification procedures, standards and policies. Martindale-Hubbell® is the facilitator of a peer review rating process. Ratings reflect the anonymous opinions of members of the bar and the judiciary. Martindale-Hubbell® Peer Review Rating™ fall into two categories – legal ability and general ethical standards. 

Practice Areas
  • 80%Business Litigation
  • 20%General Litigation
Focus Areas



2 Years Super Lawyers
  • Super Lawyers: 2004 - 2005

About Stewart Hyer Thomas

First Admitted: 1987, Texas

Professional Webpage:

Representative Clients

  • Sam Wyly, Charles Wyly, Al Hill, Jr. Ray Washburne, Centex Corp., Lattimore Materials Company; Sammy Davis, Jr Enterprises; United development Funding, Caddis Partners

Pro bono/Community Service

  • VP and Secretary - Jubilee Park and Community Center
  • President - Saint Michael and All Angels Foundation
  • Trustee, Dallas Historical Society
  • President - Dallas Assembly (2007) 
  • Senior Warden, Saint Michael and All Angels Church
  • Life Fellow, Dallas and Texas Bar Foundations 


  • AV Preeminent rating by Martindale Hubbell
  • , Recognized as “Texas Super Lawyer” by Thomson Reuters

Bar/Professional Activity

  • State Bar of Texas
  • Fifth Circuit Court of Appeals
  • Fellow, Texas Bar Foundation; Fellow, Dallas Bar Foundation

Educational Background

  • Sewanee: The University of the South, B.A., Class President, Student Trustee, 1984


  • Reported Cases:Lewis v. Foxworth, 170 S.W.3d 900 (Tex. App. — Dallas 2005) (subsequent appeal affirming the trial court, Lewis v. Foxworth, No. 05-06-00452-CV, 2007 Tex. App. LEXIS 1426 (Tex. App. Dallas Feb. 16, 2007); Crossmark, Inc. v. Hazar, 124 S.W.3d 422 (Tex. App. — Dallas 2004, pet. denied); City of Harlingen v. Estate of Sharboneau, 48 S.W.3d 177 (Tex. 2001); Condos Employee Health Care Plan v. First Integrated Health, Inc., No. 3:99-CV-2190-X, 1999 U.S. Dist. LEXIS 20516 (M.D. Tex. 2000); In re Halter, No. 05-00-00125-CV, 2000 Tex. App. LEXIS 561 (Tex. App. — Dallas Jan. 26, 2000, org. proceeding) (not designated for publication); RBB Investments, III, Ltd. v. Toolbars, No. 05-96-01780-CV, 1999 Tex. App. LEXIS 571 (Dallas Jan. 29, 1999, no pet. (not designated for publication) (per curia); In re Halter, No. 05-98-01664-CV, 1999 Tex. App. LEXIS 6478 (Tex. App. — Dallas Aug. 27, 1999, org. proceeding) (not designated for publication); In re The John G. and Marie Stella Kenedy Memorial Foundation, 982 S.W.2d 548 (Tex. App. — San Antonio 1998, org. proceeding); In re Halter, No. 05-98-02072-CV, 1998 Tex. App. LEXIS 7895 (Tex. App. — Dallas Dec. 23, 1998, org. proceeding) (not designated for publication); Union Pacific Resources Company v. Aetna Casualty & Surety Co., 894 S.W.2d 401 (Tex. App. — Ft. Forth 1994, writ denied); Brown v. KPMG Peat Marwick, 856 S.W.2d 742 (Tex. App. — El Paso 1993, writ denied); Woodbine Electric Service, Inc. v. McReynolds, 837 S.W.2d 258 (Tex. App. — East land 1992, no writ); Garrison v. Fielding Reinsurance, Inc., 765 S.W.2d 536 (Tex. App. — Dallas 1989, writ denied).

Scholarly Lectures/Writings

  • Mediation, Dependent Administration, and Judicial Discharge as ways to resolve inter-family probate disputes, Author, When Families Fight: Ways to Resolve Inter-Family Disputes, Dallas Bar Association Headnotes, Probate; Litigation;, 2020

Industry Groups

  • Commercial Litigation; General Counsel; Probate Litigation;
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Office Location for Stewart Hyer Thomas

1445 Ross Avenue
Suite 2400
Dallas, TX 75202

Phone: 214-922-4114

Fax: 214-922-4142

Last Updated: 5/15/2022

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