Trey Peacock

For over twenty-five years, Trey Peacock has won cases based on science and data, successfully representing companies and individuals in complex business disputes.  He has been lead or principal trial counsel for plaintiffs and defendants in state and federal courts in twenty states, including California, Colorado, Connecticut, Delaware, Florida, Illinois, Louisiana, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, New Jersey, New York, Oregon, Pennsylvania, South Dakota, Texas, and Washington.

Clients seek out Trey for his unique comfort level with highly technical, data-driven matters, including damages assessment.  His successes span technical areas as varied as offshore rig construction (in an international arbitration); convoluted title histories for thousands of oil and gas leases (in an energy lawsuit in state court); the underpinnings of random number generation (in a series of patent cases); the sciences of toxicology, epidemiology, and environmental exposure (in state and federal toxic tort matters); and the use of environmental air modeling (in a variety of cases, including a plaintiffs’ class action for environmental property damage).  Whether a favorable result depends upon the proper calculation of damages, or the application of advanced scientific theories, Trey is a quick study and an effective advocate.

Trey has been recognized repeatedly as a Litigation Star by Benchmark Litigation and a Leading Plaintiff Financial Lawyer by Lawdragon. Since 2022, Trey has been recognized on Lawdragon’s inaugural list of “500 Leading Litigators in America.”  In 2020 he was named a Winning Litigator by the National Law Journal and a Texas Trailblazer by Texas Lawyer (ALM).

A native of Beaumont, Texas, Trey graduated with Honors from Princeton University and from University of Texas School of Law, where he was Managing Editor of the Texas Law Review, Order of the Coif, and a Chancellor.  After law school, Trey clerked for the Honorable Joseph T. Sneed on the Ninth Circuit Court of Appeals in San Francisco, California.

Trey currently serves on the board of the Freedom Project Network.  He  previously served on the Alley Theatre’s Board of Directors for over a decade.  For ten years, Trey was Team Captain for the Susman Godfrey’s BP MS150 cycling team; under his leadership, the team raised over $1 million to fight multiple sclerosis.  In his spare time, Trey is an avid fly fisherman, snow boarder, and triathlete.

Updated Oct 2025

• IDEXX Laboratories Inc. v. the Board of Regents of the University of Texas System (Fourteenth Court of Appeals of the State of Texas; Sup. Ct.. Tex.) Recovered a full judgment of almost $80M on behalf of The University of Texas against IDEXX, a Maine based publicly traded veterinary products company, for breach of an exclusive patent license agreement involving testing for Lyme disease. After several years of litigation, Trey’s team prevailed on two motions for summary judgment and obtained a final judgment of roughly $50M from the state district court without a trial in fall 2020. IDEXX appealed that judgment. The team then successfully navigated a series of appeals through the 14th District Court of Appeals and the Texas Supreme Court that ultimately upheld the entirety of the district court’s judgment in the amount of $79.3M at the time IDEXX tendered full payment.
  
  
• Diamondback Industries v. Repeat Precision (W.D. Tex.). Secured a nearly $40 million judgment for Repeat Precision LLC, the defendant, in an intellectual property case brought by Diamondback Industries, Inc. Trey presented and cross examined each expert witness during the three-day bench trial, after which U.S. District Court Judge Alan Albright dismissed with prejudice all of Diamondback’s causes of action. Repeat Precision was awarded $39,946,902 in actual, enhanced, and punitive damages (not including attorney’s fees and costs) for its counterclaims. Texas Lawyer and Law.com covered the trial win in an article titled “Get to Know the Story Behind Houston Lawyer’s $40 Million Defense Verdict.” (subscription required). Repeat Precision later settled this case in late 2020 for more than $25M in cash payments and also received other business considerations.
  
  
• Litigation on Behalf of Walmart. Obtained two settlement awards totaling more than $16 million for six Walmart stores on the Gulf Coast in the Deepwater Horizon Settlement program. BP opposed our efforts at every stage. The Fifth Circuit affirmed both of Walmart’s awards here and here.  The client commented: “The choice of Trey Peacock to staff this matter was inspired. He did an outstanding job.”
  
  
• Former Employee v. Mostyn Law Firm private arbitration. As lead counsel for the Mostyn Law Firm, Trey successfully defeated a breach of contract claim for up to $40 million, brought by a lawyer seeking bonus and compensation in connection with the transvaginal mesh multidistrict litigation. Trey prevailed on summary judgment as to Plaintiff’s principal claims, obtained a final arbitral award dismissing all of Plaintiff’s claims, and Plaintiff recovered . . . nothing.
  
  
• FMC International v. ABB Lummus Global et al (S.D. Tex.) As lead counsel, successfully defended ABB Lummus Global, Inc. and its joint venture with Heerema Zwindrecht, which built and delivered a $700 million offshore exploration and development platform, in a multi-million-dollar construction dispute with one of the project’s subcontractors. Susman Godfrey fully prevailed for its client in arbitration pursuant to the UNCITRAL rules.

• J.D. - The University of Texas School of Law    
• B.A. - Princeton University 
• Law Clerk to the Honorable Joseph T. Sneed - United States Court of Appeals for the Ninth Circuit

• Director and Treasurer, Sunflower County Freedom Project    
• Alley Theatre: Board of Directors (2005-2017), Executive Committee, Special Events Committee, previous Chair of the Alley Theatre Ball    
• Houston Bar Association Antitrust Section: Former Section Chair    
• MS150 Susman Godfrey Team Captain (2008-2015) raising over $1 Million to Fight Multiple Sclerosis    
• MS150 Bike Rider (2006-present)