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Ahmad, Zavitsanos & Mensing

At a Glance


“High levels of autonomy.”

“This is genuinely a TRIAL law firm.”


“The hours can be a grind.”

“The learning curve is steep.”

About Ahmad, Zavitsanos & Mensing

Ahmad, Zavitsanos and Mensing P.C. is a litigation boutique whose attorneys are known for their trial prowess. With a team of over 50 lawyers, the firm has participated in more than 225 trials. The firm is a Texas staple, ranking among the Top 5 firms in Vault’s Best Midsize Law Firms in Texas. 

From IP to Energy

AZA was founded in 1993 in Texas by Joe Ahmad and John Zavitsanos—both of whom are still at the firm today. Although many of its cases involve high-stakes litigation for multinational companies, AZA also represents individuals and mid-sized businesses with serious legal issues. AZA represents both plaintiffs and defendants in a variety of practice areas, including commercial litigation, company investigations, construction and real estate litigation, executive employment litigation, intellectual property litigation, oil and gas/energy, and trade secrets and covenants not to compete.

While the firm has a strong commercial litigation practice, it is also known for its work in IP litigation, especially patent litigation. The firm’s IP lawyers handle cases across the globe and across multiple industries, such as biochemistry, chemistry, energy, hardware and software, technology, telecom, and transportation. Given its roots in the Lone Star state, it may come as no surprise that the firm also has strength advising clients in the energy sector, including big-name oil and gas companies.

Get on Your Feet

At AZA, lawyers definitely do not sit in the passenger seat for long, including as junior attorneys and summer associates. All associates take on substantive work on a trial within their first year, and summer associates have at least one opportunity to experience a deposition or courtroom session. Summers also engage in a mock argument competition in front of former judges.

News & Awards

  • IEVM v. United Energy Group Ltd., et al.
    AZA developed the winning argument that knocked this $46.5 million fraud and breach of contract case out of court before AZA’s client was even required to participate in discovery. AZA was able to destroy the case against its client even though a co-defendant was not able to obtain the same clean win.
  • Fremont Emergency Services (Mandavia), et al. vs. UnitedHealth Group, Inc. et al.
    In a closely watched December 2021 trial, a Nevada jury handed AZA client TeamHealth yet another trial victory on behalf of underpaid emergency room doctors, this time with a $62.65 million jury award against United Healthcare, the largest insurer in the nation. With attorneys’ fees, the award came to more than $75 million.
  • Melinda Abbt v. City of Houston
    In early 2022, the U.S. Fifth Circuit Court of Appeals in Melinda Abbt v. City of Houston reversed a hostile work environment summary judgment order in a Houston firefighter’s case, setting two new precedents in hostile work environment cases.
    Port of Houston Authority of Harris County Texas v. Louis Dreyfus Company Houston
  • Export Elevator LLC
    In March 2022, a jury in U.S. District Judge Lynn Hughes’ court returned a $28 million verdict for AZA client, the Port of Houston, in a breach of contract dispute with French merchant firm Louis Dreyfus Company. The dispute was over Louis Dreyfus’ refusal to do required upkeep on a portside grain elevator it rented from the government from 2008 through 2018. The lack of upkeep resulted in massive corrosion, conveyor and structural tower problems, dust system problems, and other issues.
  • Best Lawyers, 2024
  • IAM Patent 1000, 2024
  • AV Preeminent, 2024, Martindale Hubble
  • Best Law Firm, 2024, Best Lawyers
  • Chambers, 2024


Why Work Here

AZA is a firm of lawyers who love to go to trial and love to win. The partners will get associates into the courtroom as soon as possible. Associates have been allowed to try cases on their own. And they have won.  The firm lawyers are quick-thinking, intense and they value courtroom preparation and client service. The firm has been awarded for great client service.

Ahmad, Zavitsanos & Mensing

1221 McKinney, Suite 2500
Houston, TX 77010
Phone: (713) 655-1101

Firm Stats

Founders & Managing Partners: Joseph Y. Ahmad & John Zavitsanos
Hiring Partner: John Zavitsanos
Total No. Attorneys (2022):
50 - 100
No. of Partners Named 2021:
Billable-Hour Requirement:

Base Salary

All offices:
1st year: $205,000
2nd year: $215,000
3rd year: $240,000
4th year: $275,000
5th year: $305,000
6th year: $330,000
7th year: $350,000
8th year: $365,000
Summer Associate: $3,654/week

Employment Contact

Hollye Seabolt
Director of Human Resources
General recruiting email:

No. of U.S. Offices: 1

No. of International Offices: 0

Major Office Locations

Houston, TX

Major Departments

Commercial Litigation
Company Investigations, Trade Secrets, & Covenants Not to Compete
Construction & Real Estate
Executive Employment Litigation
Health Care
Intellectual Property
Oil & Gas/Energy
*See firm website for complete list of practice areas and industries.