Over $500 Million Recovered For Our Clients
Voted Among Top Chicago, Illinois Personal Injury Lawyers For 13 Years
Leading Lawyers selected Jay Paul Deratany in 2017 badge
Top Verdict: Top 50 Verdicts in Illinois in 2016 badge
Best Law Firm Logo from the U.S.News & World Report
American Bar Association (ABA) badge
American Association for Justice badge
The National Trial Lawyers: Top 100 Trial Lawyers badge
The American Society of Legal Advocates ASLA badge
Expertise.com Award

Deratany & Kosner: The Best Chicago Attorneys to Fight for Justice on behalf of the Injured, the Neglected, and the Abused

$45 Million
Wrongful Death as a Result of Social Services Negligence

$35 Million
DCFS/Social Services Negligence

$23.3 Million
Birth Injury

$19.55 Million
Child Brain Injury

$14 Million
Social Services Negligence

Why Work With Deratany & Kosner?

Focused on clients first and giving personalized attention to every case

Guided by our passion for advocacy and justice

Expert litigators who comprehensively analyze every aspect of a case

Knowledgeable and powerful legal representation on a national level

Winners of historic verdicts in Chicago and nationally

Experienced in a wide variety of catastrophic, high-value, complex cases


Over 100 Years Of Combined Legal Experience On Your Side

Jay Paul Deratany



Michael Kosner



Greg Olmstead



Thomas Stewart



Deirdre Willis


Senior Paralegal

Our Specialties

Our legal team puts its extensive experience and resources to work for all types of cases. We leave nothing unexamined in pursuit of justice for each of our clients. We work with top medical experts and scour police records to hold the responsible party accountable. We know how to play hardball with insurance companies to get maximum compensation for our clients. Let us help you or a loved one get justice after a serious injury in any of these types of accidents and more.

  • Medical Malpractice
  • Foster Care Abuse and Negligence
  • Nursing Home Abuse and Negligence
  • Birth Injuries
  • Car Accidents
  • Truck Accidents
  • Motorcycle Accidents
  • Failure to Diagnose and Treat Properly
  • Surgical Errors
  • Emergency Room Errors
  • Medication Errors
  • Failure to Timely Diagnose and Treat Infections
  • Cerebral Palsy, Erb’s Palsy and Shoulder Dystocia
  • Birth Hypoxia and Brain Damage
  • C-Section Injuries
  • Child Abuse
  • Child Neglect
  • Social Services Negligence
  • Childhood Sexual Assault
  • Slip and Fall Accidents
  • Premises Liability Claims
  • Dog Bites and Animal Attacks
  • Workplace and Construction Accidents
  • Tractor-Trailer Accidents
  • Pedestrian and Bicycle Accidents
  • Commercial Vehicle Accidents
  • Wrongful Death
  • Other Injury Cases


  • We stand up for the rights of victims of foster care abuse and negligence and social services negligence.
  • We help victims of abuse and negligence involving major hospitals and nursing homes.
  • We handle serious car accidents involving drunk and distracted drivers, many of which occur on Interstate 90 on Chicago’s South Side.
  • We litigate truck accidents involving commercial and personal vehicles, many of which are operated by tired and distracted drivers.
  • We affiliate with the foremost experts in workers’ compensation fighting for workers injured on the job – oftentimes as a result of unsafe conditions on construction sites.

Put your trust in Deratany & Kosner.
Call us today for a free case consultation.

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