About
Managing Partner: John Zavitsanos
Number of partners: 8
Number of lawyers: 50
Languages: Arabic (some), Bengali, Cantonese, English, Farsi, French, Greek, Mandarin, Russian, Spanish, Ukrainian, Urdu/Hindi
Firm Overview:
AZA is home to true courtroom lawyers who provide a formidable track record in complex commercial litigation and intellectual property disputes. Often called in to court on the eve of trial, among other areas AZA focuses on energy, patents, business disputes, trade secrets, and non-competes.. This lean boutique offers efficient, top grade legal advice. AZA was ranked highly by Chambers USA, named First-Tier in Commercial Litigation in Houston by US News & World Report and The Best Lawyers in America. In US surveys of corporate counsel, AZA has been cited both for being an ‘awesome opponent’ in court and for excellent client service.
Main Areas of Practice:
Complex Commercial Litigation:
Clients call AZA when the stakes are high. AZA’s eight partners have tried hundreds of cases, most of them commercial matters representing Fortune 1,000 companies, including extensive work in the energy industry. The firm handles all types of commercial cases, from breach of contract, warranty, indemnity, construction, real estate and business tort lawsuits to shareholder oppression, partnership and fiduciary litigation. Many AZA clients are former adversaries. Many firm lawyers have been named among the top attorneys in the nation by US News & World Report and The Best Lawyers in America. Five firm partners are Board-Certified by the Texas Board of Legal Specialization. AZA is regularly hired on the eve of trial.
One Example: An oilfield supplier facing more than $35 million in exposure hired AZA shortly before trial. After getting the case continued, AZA filed a counterclaim. Nine months later, AZA’s opponent ended up paying the firm’s client a multimillion-dollar cash settlement.
Key Clients: AZA commercial litigation clients include Chevron, CITGO, National Oilwell Varco, Plains All American and DNOW in a variety of energy litigation.
Contact: John Zavitsanos
Email: [email protected]
Contact: Tim Shelby
Email: [email protected]
Intellectual Property:
‘This Houston trial boutique dazzles in patent infringement cases across the United States and beyond,’ wrote IAM Patent 1000 – The World’s Leading Patent Professionals in ranking AZA among the best Texas patent litigation firms for the third year in a row.
AZA lawyers have experienced great success representing clients in IP and IP-related cases throughout the world, including Europe, Asia and the Middle East. They regularly handle patent infringement, trademark, copyright and trade secret cases. Languages spoken by IP team members include Arabic (some), Cantonese, Farsi, French, Mandarin, Russian, Spanish, and Urdu/Hindi.
AZA patent lawyers have experience in numerous industry sectors including energy, technology, chemistry, biochemistry, telecom, hardware and software, and transportation. They have had success representing both plaintiffs and defendants in IP cases.
AZA’s IP stable includes experienced trial lawyers and lawyers with technical backgrounds in chemistry, electrical engineering, software and biochemistry. The AZA IP team has more than 15 lawyers. Included are three-board certified trial lawyers and several lawyers licensed as patent attorneys before the US Patent and Trademark Office and several with extensive Patent Trial and Appeal Board (PTAB) experience.
Contact: Jason McManis
Email: [email protected]
Trade Secrets/ Covenant Not to Compete:
AZA is nationally recognized in covenant not to compete and trade secret litigation through work for numerous energy, technology and financial companies. AZA secured a unanimous defense verdict in a high profile, $30 million trade secret lawsuit in Houston after being called in on the eve of trial.
Key Clients: AZA trade secret/covenant not to compete clients include Mistras Group, successful defense in trade secrets case; and A&B Valve and Supply (A&B), successful defense in nationally publicized case filed by National Oilwell Varco, which then hired AZA to represent the company in two trade secret cases.
Contact: Joseph Ahmad
Email: [email protected]
Contact: Todd Mensing
Email: [email protected]
Clients:
AAA Life Insurance Company; Amify; Aon Risk Services; American Automobile Association; Anadarko; Apache Corp.; Ben and Jerry's; Brown & Root; Cart.com; Chevron; Chevron Phillips Chemical Company; CITGO; Clean Harbors; Cornerstone; Cosentino; Crescent Energy; DNOW; Dyno Nobel; Ecumenical Patriarchate of the Eastern Orthodox Church; EDP Renewables; Enterprise Products Partners; Francesca’s; Genuine Parts Company; Group 1 Automotive Inc.; Halliburton; Heimrich & Payne; Houston Rockets; Huntsman; KBR; Key Energy; Landry's; Lyondell Chemical Company; Maverick Natural Resources; Mi-Jack Products Inc.; Mistras Inc.; National Oilwell Varco; NAPA Auto Parts; Nitya Capital; NuStar; Patterson-UTI;; PEMEX; Phillips 66; Plains All American Pipeline L.P.; Port of Houston Authority; Ramex Inc.; Ryan, LLC; Solugen; Space X; Targa; TechnipFMC; Total Energies; Transocean; Valero; Vinmar; Weatherford International; W&T Offshore; Westlake.
Ranked Offices
Provided by Ahmad, Zavitsanos & Mensing
- HoustonOne Houston Center, Suite 2500, 1221 Mckinney Street, Houston, Texas, USA, TX 77010
- Web: www.azalaw.com
- Tel: +1 713 655 1101
- Fax: +1 713 655 0062
- View ranked office
Ahmad, Zavitsanos & Mensing rankings
Articles, highlights and press releases
144 items provided by Ahmad, Zavitsanos & Mensing
AZA Client Removes the Secrecy Veil from Meta Employee Arbitrations
Successful Palestinian American software engineer who filed wrongful termination case against Meta for discrimination gets judicial ruling removing Meta employee arbitrations from secrecy.
Benchmark Litigation 2025 Honors AZA and Three Partners for Excellence
The AZA firm and three partners are once again honored by Benchmark LItigation for excellence.
AZA’s $41M Verdict Makes Another National List of Top 100 Verdicts for 2023
AZA frequently makes top verdict lists in Texas and nationally. It made another list.
Eleven AZA Lawyers Named Super Lawyers, Two in Top 100 for Texas
AZA trial lawyers are once again recognized as among the best in Texas
AZA Once Again Named Among the Nation’s ‘Most Feared’ Law Firms
BTI Counseling once again named AZA one of the firms lawyers and their clients most hate to see at the opposite table. BTI has also named AZA for best client service.
Eleven AZA Lawyers Named Lawdragon Leading Litigators
Multiple AZA partners again make national best trial lawyers list. It's what AZA does.
AZA Wins $25.6 Million Jury Verdict for Healthcare Client
AZA had yet another jury verdict in the healthcare arena.
More than half of AZA’s attorneys honored as Best Lawyers and Ones to Watch
Fourteen AZA lawyers were named Best Lawyers, and fifteen were named as Best Lawyers: Ones to Watch, an honor for lawyers who have been practicing for fewer than 10 years.
AZA Named to 2023 National Top Verdict List
AZA once again has a top verdict in the nation.
Vault’s 2025 Career Guide Puts AZA among Top Midsize Firms in U.S. and Texas
AZA associates once again rate the firm highly, as do competing associates.
Six AZA Lawyers Named to Lawdragon’s 2024 Next Generation of Leading Lawyers
AZA'a younger lawyers are recognized for their expertise once again
AZA Aids U.S. in Reaching $15 Million Baylor Heart Surgery Medicare Fraud Settlement
AZA and whistleblower client helps government uncover problems that lead to record settlement for concurrent surgery Medicaid fraud
International IP Guide Again Counts AZA Among Top Texas Patent Trial Firms
AZA partners Jason McManis and Todd Mensing honored for their IP and patent expertise.
AZA Earns Prestigious Chambers USA Rankings for the 11th Year in a Row
Houston-based trial firm Ahmad Zavitsanos & Mensing is highly rated yet again and two lawyers get top ratings in Texas.
John Zavitsanos Named to Lawdragon 500 Leading Plaintiff Financial Lawyers
AZA co-founder John Zavitsanos is honored nationally for his trial work once again.
AZA Wins Two Top 2023 Texas Verdicts for Energy Companies
AZA wins two more in a long line of top verdicts on the state.
AZA Wins Appeal for Energy Giant
AZA's appellate group racked up another appeal win in energy sector.
AZA Client Wins Take-Nothing Judgment from Jury
AZA won a take nothing case for client with $82 million exposure.
Thirteen AZA Attorneys Earn Texas Rising Stars Honor
AZA's young attorneys awarded.
AZA Co-founders Ahmad and Zavitsanos Named Lawdragon Leading Lawyers in America
Joe Ahmad and John Zavitsanos lamed leading lawyers in United States
Cameron Byrd, Nathan Campbell, Jordan Warshauer and Kelsi Stayart White have been named partners at the trial and appellate boutique AZA.
Jury Finds for Female Firefighter in Revenge Porn Case
AZA gets jury verdict for former female firefighter's mental anguish.
Jury Refuses to Find Against Odessa Pumps; Awards It $2.4 Million
AZA's client was sued and the plaintiff took nothing but the AZA client was awarded $2.4 million in fees.
AZA Named for 12th Year to List of Best Law Firms
Clients praised AZA winning its 12th year on the Best Law Firm list.
Jury Awards AZA Client Mid Main $32.5 Million in Midtown Construction Case
Texas law firm AZA wins millions in counterclaims for client who was sued
Bancorp Sued for Forcing Pricey, Secret Insurance on Houston Apartment Complex
Houston's AZA sued Bancorp on behalf of Houston business for improper forced-placed insurance
Ten AZA Lawyers Make 2023 Super Lawyers List; Two are Top in Texas
Houston boutique trial firm AZA gets 10 lawyers on Texas Super Lawyers list.
Nine AZA Lawyers Named 2024 Lawdragon 500 Leading Litigators
National list of leading litigators includes nine from AZA
Texas Lawyer Honors AZA on Watch List for Diversity and Appellate Practice
AZA was awarded both for its amazing new appellate practice and its firm diversity by the Texas legal media.
AZA Wins Dismissal of California Wrongful Death Lawsuit Against International Energy Company
A federal judge in California granted summary judgment for an international energy company represented by AZA in a $10 million offshore platform wrongful death case.
AZA Client Removes the Secrecy Veil from Meta Employee Arbitrations
Successful Palestinian American software engineer who filed wrongful termination case against Meta for discrimination gets judicial ruling removing Meta employee arbitrations from secrecy.
Benchmark Litigation 2025 Honors AZA and Three Partners for Excellence
The AZA firm and three partners are once again honored by Benchmark LItigation for excellence.
AZA’s $41M Verdict Makes Another National List of Top 100 Verdicts for 2023
AZA frequently makes top verdict lists in Texas and nationally. It made another list.
Eleven AZA Lawyers Named Super Lawyers, Two in Top 100 for Texas
AZA trial lawyers are once again recognized as among the best in Texas
AZA Once Again Named Among the Nation’s ‘Most Feared’ Law Firms
BTI Counseling once again named AZA one of the firms lawyers and their clients most hate to see at the opposite table. BTI has also named AZA for best client service.
Eleven AZA Lawyers Named Lawdragon Leading Litigators
Multiple AZA partners again make national best trial lawyers list. It's what AZA does.
AZA Wins $25.6 Million Jury Verdict for Healthcare Client
AZA had yet another jury verdict in the healthcare arena.
More than half of AZA’s attorneys honored as Best Lawyers and Ones to Watch
Fourteen AZA lawyers were named Best Lawyers, and fifteen were named as Best Lawyers: Ones to Watch, an honor for lawyers who have been practicing for fewer than 10 years.
AZA Named to 2023 National Top Verdict List
AZA once again has a top verdict in the nation.
Vault’s 2025 Career Guide Puts AZA among Top Midsize Firms in U.S. and Texas
AZA associates once again rate the firm highly, as do competing associates.
Six AZA Lawyers Named to Lawdragon’s 2024 Next Generation of Leading Lawyers
AZA'a younger lawyers are recognized for their expertise once again
AZA Aids U.S. in Reaching $15 Million Baylor Heart Surgery Medicare Fraud Settlement
AZA and whistleblower client helps government uncover problems that lead to record settlement for concurrent surgery Medicaid fraud
International IP Guide Again Counts AZA Among Top Texas Patent Trial Firms
AZA partners Jason McManis and Todd Mensing honored for their IP and patent expertise.
AZA Earns Prestigious Chambers USA Rankings for the 11th Year in a Row
Houston-based trial firm Ahmad Zavitsanos & Mensing is highly rated yet again and two lawyers get top ratings in Texas.
John Zavitsanos Named to Lawdragon 500 Leading Plaintiff Financial Lawyers
AZA co-founder John Zavitsanos is honored nationally for his trial work once again.
AZA Wins Two Top 2023 Texas Verdicts for Energy Companies
AZA wins two more in a long line of top verdicts on the state.
AZA Wins Appeal for Energy Giant
AZA's appellate group racked up another appeal win in energy sector.
AZA Client Wins Take-Nothing Judgment from Jury
AZA won a take nothing case for client with $82 million exposure.
Thirteen AZA Attorneys Earn Texas Rising Stars Honor
AZA's young attorneys awarded.
AZA Co-founders Ahmad and Zavitsanos Named Lawdragon Leading Lawyers in America
Joe Ahmad and John Zavitsanos lamed leading lawyers in United States
Cameron Byrd, Nathan Campbell, Jordan Warshauer and Kelsi Stayart White have been named partners at the trial and appellate boutique AZA.
Jury Finds for Female Firefighter in Revenge Porn Case
AZA gets jury verdict for former female firefighter's mental anguish.
Jury Refuses to Find Against Odessa Pumps; Awards It $2.4 Million
AZA's client was sued and the plaintiff took nothing but the AZA client was awarded $2.4 million in fees.
AZA Named for 12th Year to List of Best Law Firms
Clients praised AZA winning its 12th year on the Best Law Firm list.
Jury Awards AZA Client Mid Main $32.5 Million in Midtown Construction Case
Texas law firm AZA wins millions in counterclaims for client who was sued
Bancorp Sued for Forcing Pricey, Secret Insurance on Houston Apartment Complex
Houston's AZA sued Bancorp on behalf of Houston business for improper forced-placed insurance
Ten AZA Lawyers Make 2023 Super Lawyers List; Two are Top in Texas
Houston boutique trial firm AZA gets 10 lawyers on Texas Super Lawyers list.
Nine AZA Lawyers Named 2024 Lawdragon 500 Leading Litigators
National list of leading litigators includes nine from AZA
Texas Lawyer Honors AZA on Watch List for Diversity and Appellate Practice
AZA was awarded both for its amazing new appellate practice and its firm diversity by the Texas legal media.
AZA Wins Dismissal of California Wrongful Death Lawsuit Against International Energy Company
A federal judge in California granted summary judgment for an international energy company represented by AZA in a $10 million offshore platform wrongful death case.