Truck Accident
Recovery involving catastrophic injuries after a commercial trucking collision.
St. Louis · Mass Tort & Personal Injury
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.
- Available 24/7
- Free, confidential consultation
- No fee unless we win
Trial-ready advocacy across the United States
Case Results
Serious cases. Meaningful recoveries.
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.
Rated
Super
Lawyers 2025
Lawyers 2025
Avvo Rating
10.0
Superb
National
Top 100
Trial Lawyers
Million Dollar
Advocates
Forum
Martindale
AV
Preeminent
Recognition shown for illustration — to be replaced with verified credentials.
Client experiences
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.”Maria G. Defective product claim · St. Louis, MO
How we help
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.
Roblox & Online Harm
A dedicated practice for families whose children were exploited or harmed on online platforms.
Learn more →Wrongful Death
Compassionate, determined representation for families seeking justice after a preventable loss.
Free Case Review
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.
Call(314) 555-0182
Office1010 Market St, Suite 1450
St. Louis,
MO 63101 *
About Thomas
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.
MO · IL · COAdmitted in three states
Since 1993Three decades of litigation
Wash. U. LawJuris Doctor, 1993
Member — American Bar Association · American Association for Justice · Missouri Association of Trial Lawyers
Roblox Injury Center
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.
Cases we handle
- Predatory grooming & exploitation by adults
- Exposure to harmful or explicit content
- Manipulative monetization targeting minors
- Inadequate safety & age-verification failures
A separate, in-depth site for Roblox & online-harm cases is in development at this subdomain.
Why clients choose Antoniou Law
Experience on your side, on a fee that’s never out of pocket.
$0Up-front cost to start your case
24/7Reachable when you need answers
1:1Direct attorney access — not a call center
3States admitted — MO, IL & CO
Prior results do not guarantee a similar outcome. Specific case results available upon consultation.