When you've been harmed, you need a lawyer who won't back down.
Thomas Antoniou represents people seriously injured by negligence, dangerous products, and corporate misconduct — with a dedicated focus on protecting children harmed on Roblox and other online platforms.
Serious cases. Meaningful recoveries.
Truck Accident
Recovery involving catastrophic injuries after a commercial trucking collision.
Defective Product
Product-liability resolution after an unsafe product caused permanent harm.
Premises Injury
Settlement for a client injured because a property owner ignored dangerous conditions.
Rideshare Collision
Resolution involving lost income, medical bills, and long-term recovery needs.
In their words.
“Thomas treated my case like it was the only one he had. He explained every step, fought hard, and recovered far more than I ever expected.”
Practice areas built around the cases that change lives.
Mass Tort & Class Litigation
Holding pharmaceutical companies, manufacturers, and corporations accountable when their products harm thousands.
Personal Injury
Serious and catastrophic injuries caused by another's negligence — and the full recovery you're owed.
Auto, Truck & Rideshare
Collisions that leave families facing lost income, mounting bills, and a long road to recovery.
Defective & Dangerous Products
When unsafe drugs, devices, and consumer products cause injury, we pursue the companies responsible.
Online Harm & Roblox Cases
A focused practice for families whose children were exploited, groomed, or harmed on Roblox and online platforms.
Learn more →Wrongful Death
Compassionate, determined representation for families seeking justice after a preventable loss.
Let's talk about what happened.
Every consultation is free and confidential. There's no obligation, and you pay nothing unless we win your case.
St. Louis, MO 63101 *
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A St. Louis trial lawyer who takes the cases that matter.
A St. Louis native, Thomas Antoniou has built his career on pharmaceutical mass tort litigation and representing consumers seriously injured by defective drugs and products — holding manufacturers accountable when what they sell causes harm.
Admitted in Missouri, Illinois, and Colorado and practicing since 1993, Thomas is now building his own firm in St. Louis — bringing three decades of experience against powerful corporate defendants to a new frontier: protecting children and families harmed on today's online platforms.
When the platform fails your child, we step in.
Roblox is used by tens of millions of children — and that scale has created real danger. Thomas Antoniou is building a focused practice to hold platforms accountable when families are harmed, guiding parents through a process most law firms aren't equipped to handle.
Experience on your side, on a fee that's never out of pocket.
Prior results do not guarantee a similar outcome. Specific case results available upon consultation.