About
William J. Thonus is a New York personal injury litigation attorney who represents people harmed by negligence. His work includes car and truck collisions, construction site accidents, trip and slip falls, and wrongful death claims. He helps injured clients pursue fair compensation from insurers, corporations, and responsible parties. His approach centers on listening, careful preparation, and strong advocacy when serious injuries disrupt health, work, finances, family stability, and long-term recovery.
William earned his J.D. from Pace University School of Law and his B.S. in business administration from Ramapo College of New Jersey. His education supports legal analysis, negotiation, case strategy, and financial issue review. He uses that background to evaluate damages, explain litigation risks, prepare evidence, and help clients make informed decisions during settlement talks, hearings, or trial when claims involve serious losses and disputed responsibility for life-changing injury claims.
William has successfully litigated hundreds of plaintiff cases throughout New York State. His experience includes negligence-based claims involving traumatic injuries, unsafe conditions, transportation accidents, and construction-related harm. He is known for meticulous preparation, ethical practice, and courtroom strength. By understanding each client’s story and injury impact, he builds strategies designed to seek accountability, restore financial security, and help families move forward after preventable harm and hardship occur unexpectedly.
William J. Thonus focuses on personal injury advocacy for clients facing powerful insurance companies and corporations. His work has contributed to tens of millions of dollars in recoveries for injured people. He also supports local charities, first responder initiatives, and community outreach programs in the Hudson Valley. Through negotiation, trial litigation, and direct communication, he helps clients pursue dignity, stability, and fair compensation after serious accidents and sudden losses.
Law Office Affiliations
- Litigation Attorney, Rutberg Breslow Personal Injury Law
- Member, New York State Bar Association
- Member, New Jersey State Bar Association
Licensed State
- New York
- New Jersey
Education
- Pace University School of Law
Juris Doctor (JD) - Ramapo College of New Jersey
BS in Business Administration
Awards & Badges


- Animal & Dog Bites
- Brain Injury
- Car Accidents
- Construction Accidents
- Medical Malpractice
- Motorcycle Accidents
- Nursing Home Abuse & Neglect
- Products Liability
- Slip & Fall Accidents
- Trucking Accidents
- Wrongful Death




