Grant B. Martinez

713.632.8017 | Houston, Texas
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Professional Summary

Grant’s practice focuses on high-stakes commercial litigation and appeals. His experience includes leading and contributing in multi-week jury and bench trials, arbitration hearings, and preliminary injunction hearings. Grant has briefed and argued disputes at all levels of the federal and state courts, including arguing before the Supreme Court of Connecticut. Clients and co-counsel trust him to help them solve difficult legal issues from beginning to end.

Prior to joining the firm in 2016, Grant practiced with Cravath, Swaine & Moore LLP. He also clerked for the Hon. Diarmuid F. O’Scannlain of the U.S. Court of Appeals for the Ninth Circuit.

Grant is a graduate of Yale Law School, where he was a Comments Editor of the Yale Law Journal, President of the Yale Law & Business Society, and Alumni Chair of the Yale Latino Law Students Association. He served in the Supreme Court Advocacy Clinic and the Civil Liberties & National Security Clinic.

Grant is recognized in commercial litigation in Best Lawyers in America "Ones to Watch" list and as a “Texas Rising Star” by Thomson Reuters' Super Lawyers. He serves as Co-Hiring Attorney for the firm.

Representative Experience
  • Bridges v. Houston Methodist Hospital. Fifth Circuit affirmed dismissal of 119 plaintiffs’ claims against hospital for implementing a COVID-19 vaccine policy.
  • In re Houston Astros, LLC. Secured complete victory on class action claims against Houston Astros in connection with sign stealing; drafted briefs in trial and appellate courts.
  • Fulcrum Credit v. Kent Int’l. Obtained complete dismissal under the TCPA of breach-of-contract, declaratory judgment, and promissory estoppel claims.
  • America’s Collectibles Network v. Sterling Commerce. Drafted successful briefing in federal district court and Sixth Circuit that saved client over $25 million; participated in a five-week jury trial on breach of contract and fraud relating to software implementation.
  • US. v. American Express. Participated in seven-week antitrust trial, which was followed by successful appeals in both the Second Circuit and the U.S. Supreme Court.
  • BTEC v. BNA. Presented witness at temporary injunction hearing; drafted numerous briefs in intra-corporate dispute between members of a Delaware LLC, including successful motions for summary judgment on opposing party’s central claim
  • Commissioner of Correction v. Freedom of Info. Commission; El Badrawi v. DHS. Argued in Connecticut Supreme Court and federal district court, drafted briefs filed in federal and state courts, and took numerous depositions.
  • Stop the Beach Renourishment, Inc. v. Fla. Dep’t of Evntl. Servs.; Carr v. U.S. Drafted briefs, researched, proposed arguments, and prepared advocates for oral argument, resulting in two favorable opinions from the U.S. Supreme Court.
Professional Honors & Affiliations
Presentations & Publications
  • “Proving Up Damages in Business Cases,” State Bar of Texas Business Disputes Course - September 2022 (presenter)
  • Comment: “Indefinite Detention of Immigrant Information,” 120 Yale Law Journal 667 (2010)
Education & Professional Background
  • Yale Law School, J.D., 2010 (Comments Editor, Yale Law Journal)
  • Stanford University, B.S., Mechanical Engineering, B.A., History, with distinction, 2006 (Phi Beta Kappa, Tau Beta Pi engineering honors society)
  • Law Clerk to The Hon. Diarmuid  F. O’Scannlain, U.S. Circuit Judge for the Ninth Circuit, 2015-2016
  • Admitted to Practice: New York, 2011; Texas, 2017; U.S. District Court, Southern and Western Districts of Texas, 2017; U.S. Court of Appeals for the Ninth Circuit, 2015; Fifth Circuit, 2017; Sixth Circuit, 2018