Strategic legal representation for complex commercial disputes and high-stakes litigation. We bring experience, insight, and a results-driven approach to every case.
Litigating Business and Commercial Transactions since 2009
Clients seek the services of Grealish McZeal PC for our Reputation, Respect in the Industry and Results in their complex commercial litigation matters.
What We Do
Let Our Experience Be Your Guide
Commercial Litigation
Strategic representation in complex business disputes, contract claims, and high-stakes commercial litigation.
Grealish McZeal P.C. represents clients in complex commercial litigation and business disputes. With extensive trial experience and a commitment to professionalism, we develop strategic legal solutions tailored to each client’s needs.
Marcellous McZeal has been inducted to the 2025 class of The American Board of Trial Advocates (ABOTA), one of the nation’s most esteemed organizations committed to the preservation and promotion of the civil jury trial.
ABOTA membership is extended by invitation only to trial attorneys who have demonstrated exceptional skill, integrity, and dedication to the art of advocacy. With this honor, I join an elite group of practitioners recognized for their professionalism and commitment to elevating standards within the legal profession.
“I am deeply honored to join ABOTA and to stand alongside so many accomplished advocates. ABOTA’s mission to protect the constitutional right to a civil jury trial is essential to our justice system, and I look forward to contributing to that work.”
– Marcellous McZeal
A Legacy of Trial Advocacy
Founded in 1958, the American Board of Trial Advocates (ABOTA) brings together plaintiff and defense lawyers and judges committed to civility, professionalism, and preserving the Seventh Amendment right to trial by jury.
Recognized Among Trial Lawyers
Marcellous McZeal is also a member of The National Trial Lawyers Top 100, reflecting his professional recognition in the trial advocacy community.
Cases
Recent Case Results
Obtained a reversal of judgment for our client in U.S. District Court Eastern District of New York
Obtained a reversal of multimillion dollar judgment for our client Harris County District Court
Filed Motion to Dismiss $50,000,000 RICO and securities fraud case in the U.S. District Court Southern District of New York.
Defending client against $24,000,000 claim for breach of contract and fraud relating to the installation of bundles of heat recovery units in a heat recovery refinery.
1+
Years of Experience
+
Former Trial Judges
$200+
Dollars in Active Litigation
Who We Are
Why Choose Us?
At Grealish McZeal P.C., we combine extensive trial experience, strategic thinking, and personalized legal representation to handle complex commercial disputes. We approach every case with thorough preparation, professional integrity, and a clear focus on protecting our clients’ interests.
Strategic preparation and focused advocacy tailored to each client's legal objectives.
OUR LEGAL SERVICES
Arbitration, Mediation & Litigation
With experience as a former state court trial judge, Marcellous McZeal brings valuable judicial insight and trial experience to dispute resolution. We provide strategic guidance in arbitration, mediation, and complex litigation, helping clients navigate challenging legal matters with confidence.
We bring extensive trial experience and professionalism to every case
We are headquartered in Houston, TX with a satellite office in Hyde Park, MA. Grealish McZeal P.C. represents clients in business transactions and civil litigation matters. We bring extensive trial experience and professionalism to every case and customize our representation to the clients individual needs and concerns.