Ahmad, Zavitsanos & Mensing

Ahmad, Zavitsanos & Mensing, or AZA, is first and foremost a trial firm. Its more than 60 lawyers bring clients a formidable courtroom record in complex commercial litigation, including energy, trade secret, intellectual property, construction and real estate, environmental, class action, restrictive covenant, catastrophic injury, and business dispute cases. The firm's partners have tried more than 250 cases, and AZA has been in trial nearly every month since 2016.

AZA has earned a coveted rating for its Texas commercial litigation work in every edition of Chambers USA: America's Leading Lawyers for Business from 2014 through 2026. U.S. News & World Report and Best Lawyers have named AZA a Tier 1 firm in Commercial Litigation and Appellate in their Best Law Firms rankings, and Best Lawyers in America lists 14 AZA lawyers in Houston Commercial Litigation, more than any other firm. Benchmark Litigation, the definitive guide to America's leading litigation firms and attorneys, has recognized all three of AZA's name partners. Lawdragon has named 11 AZA lawyers to its 500 Leading Litigators in America, and more than half of the firm's attorneys were selected to the 2026 Texas Super Lawyers or Rising Stars lists.

Those rankings rest on results. AZA has secured one of the nation's top 50 plaintiff verdicts ten years running, obtained one of the top 10 IP verdicts in the country in 2025, and won the largest Harris County jury verdict in commercial litigation in 2024. Law360 named AZA a 2026 Regional Powerhouse, one of only five firms in Texas to earn the distinction, and Firm Prospects ranks AZA among the top 25 boutiques in the nation. Texas Lawyer has named AZA Litigation Department of the Year four times and inducted the firm into its Texas Verdicts Hall of Fame. And AZA is among the nation's "Most Feared" law firms, as identified by general counsel and in-house litigators surveyed by BTI Consulting.

Dedication to clients, coupled with the ability to prevail before judges and juries alike, is why general counsel across the country know AZA. Clients including Chevron, LyondellBasell, Halliburton, KBR, TotalEnergies, Transocean, and the Houston Rockets trust the firm with their most difficult matters, and AZA is often hired on the eve of trial, once it has become clear a case must be tried. It is also why corporate counsel have named AZA one of the firms with the best client service among those serving the Fortune 1000. In fact, AZA has been hired many times by the same companies it has beaten at trial.