Mark Doré


[email protected]

Sara Smith


[email protected]

Mark Doré focuses his practice on complex commercial litigation. 

Following law school, Mark was a law clerk to Judge Xavier Rodriguez, United States District Court for the Western District of Texas, 2018-2019; and Judge Patrick E. Higginbotham, United States Court of Appeals for the Fifth Circuit, 2019-2020. 

Representative Matters

Successive Summary Judgment Wins as Plaintiffs in Securities Litigation
Occidental Petroleum Corp. and Anadarko Petroleum Corp. v. Wells Fargo Bank, N.A. 
[Southern District of Texas]
Represent Occidental Petroleum Corp. and Anadarko Petroleum Corp. in federal-court litigation with Wells Fargo Bank. The case arose from an agreed liquidation plan by which Wells Fargo was to sell nearly 2 million shares of Occidental common stock. As Plaintiffs, Occidental and Anadarko asserted breach-of-contract claims for Wells Fargo’s failure to sell the stock timely, which resulted in reduced sale proceeds of roughly $38 million. Wells Fargo asserted counterclaims alleging that Occidental and its transfer agent were liable for the same reduced market value of the stock. Mark successfully briefed and argued a partial motion to dismiss Wells Fargo’s claims; cross-motions for summary judgment that established Wells Fargo’s liability for breach of contract and that disposed of all counterclaims against Occidental; and a motion for summary judgment on damages that yielded all damages sought. Mark also took and defended the depositions of key fact and expert witnesses.

Arbitrations Involving a Salt Mine Collapse
Represent Occidental Chemical Corporation and affiliated entities (“Oxy”) in a series of cases involving the collapse of a salt mine operated by Texas Brine Company, LLC on land owned by Oxy, which resulted in the Bayou Corne Sinkhole. Mark was part of a Gibbs & Bruns team that obtained a favorable confidential award following a several-week arbitration regarding the arbitrability of the parties’ claims and that recently completed an eight-week merits arbitration, with a decision expected in late 2023.

Confidential ICDR Arbitration
Representing major U.S. oil and gas company in dispute with foreign company arising out of expropriation of oilfield assets.

Favorable Settlement in Pipeline Dispute
Represented an affiliate of Kinder Morgan in litigation concerning abandonment liability for offshore pipeline segments following a significant transaction. Mark was the lead writer for a motion for summary judgment that was pending when the dispute settled favorably.

Favorable Settlement in Contract Dispute
Represented lawyers in litigation arising from their investment in a client’s business. Mark was the lead writer for a motion for summary judgment that was pending when the dispute settled favorably.

Favorable Settlement in Employment Dispute
Represented a geologist as plaintiff in litigation against his former employer concerning royalty interests in oil-and-gas prospects. Mark was the lead writer for a response to a summary-judgment motion, which was pending when the dispute settled favorably.

Pro Bono Matters
Mark secured parole release for a pro bono client.


Yale Law School, J.D., 2018
  Yale Law & Policy Review, Executive Editor

Texas A&M University, B.A., summa cum laude, Phi Beta Kappa, 2015
  The Battalion, Editor in Chief


Listed in Best Lawyers in America: Ones to Watch   
  Commercial Litigation, 2024

Admissions and Certifications

State Bar of Texas

Memberships and Affiliations

Houston Bar Association, Member