53 W. Jackson Blvd., Suite 460, Chicago, IL 60604
(312) 235-8880
(312) 235-8884


Michael R. Hartigan 

Michael Hartigan is the Managing Partner at Hartigan & O’Connor, LLC. He began his career as a Cook County Assistant’s State’s Attorney, Civil Actions Bureau defending the Office of the Cook County Sheriff in state and federal court. In 2004, he joined what is now Hartigan and O’Connor and has amassed numerous victories on behalf of his clients ever since.

He attended Marquette University in Milwaukee where he graduated cum laude receiving his degree in Political Science and Criminology/Law Studies in 1997. Michael went on obtain his juris doctor from the DePaul University College of Law in 2000.

Michael has devoted a substantial amount of his practice to municipal and insurance defense. He has successfully defended self-insured entities, primarily within the transportation services industry. Michael also represents insurance companies in subrogation matters and devotes some of his time to personal injury litigation. He is also active in commercial litigation largely involving contract and wage disputes and domestic relations litigation with a focus on resolving contested divorce proceedings in a cost-effective and amicable manner.

Michael has tried matters to verdict in both state and federal courts. He has briefed and argued matters before the Illinois Court of Appeals and the U.S. Court of Appeals for the Seventh Circuit and is licensed to argue before the United States Supreme Court.

Michael and his wife, Nicole, reside with their family in the Village of Clarendon Hills. He is a life-long Cubs fan and an avid follower of Marquette basketball.

ar Admissions


  • U.S. District Court for the Northern District of Illinois
  • U.S. District Court for the Central District of Illinois
  • U.S. Seventh Circuit Court of Appeals
  • Member, Federal Trial Bar

Areas of Practice

  • Insurance and Municipal Defense
  • Civil Rights
  • Large Loss Subrogation
  • Personal Injury
  • Commercial Litigation
  • Divorce


  • Illinois State Bar Association
  • Illinois Bar Foundation
  • Illinois Association of Defense Counsel
  • Defense Research Institute

Illinois State Bar Association

  • Tort Law Section Council; Chair, 2013-2014
  • Insurance Law Section Council; Chair 2018-2019
  • Judicial Evaluation Committee, Chair Qualified

Representative Cases

Motor Vehicle Litigation:

Henry v. Moy, 2015 L 559: summary judgment granted in favor of Village of Bartlett based upon one-year statute of limitations where Court held that police officer returning from a training session hosted by a neighboring municipality was acting in the scope of his employment.

Lentz v. Globe Taxi Association, et al, 2010 L 5817: pedestrian struck outside the crosswalk by taxi. Summary judgment granted to medallion owner and taxi affiliation company based upon lack of employer-employee relationship.

Johnson v. Mr. Bults, Inc., 2009 L 1613: truck driver clipped the front bumper of CTA bus allegedly causing personal injures to CTA driver. Admitted negligence at trial, but defense contested nature and extent of injury. Jury was asked to award $821,453. Jury awarded $363,000 for medical expenses and past and future wage loss only.

Williams v. City of Evanston, 378 Ill.App.3d 590 (1st Dist. 2007): summary judgment affirmed for City paramedics transporting patient to hospital pursuant to 745 ILCS 10/5-106 of the Local Governmental and Governmental Employees Tort Immunity Act. This decision was the subject of a column in the Chicago Daily Law Bulletin.

Civil Rights:

Aleman v. Village of Hanover Park, 662 F.3d 897 (7th Cir. 2011): summary judgment affirmed in part when investigators had probable cause to arrest day-care provider for aggravated battery of an infant injured while under his care.

Lovette-Cephus v. Village of Park Forest, 587 Fed.Appx. 983 (7th Cir. 2014): summary judgment affirmed when there was no evidence to support equal protection claim brought by Plaintiff, an African-American woman, against Village for allegedly imposing stricter business-licensing requirements on her proposed bakery when compared to a similar business owned and operated by Caucasian woman.

Mara Furniture v. Village of Hanover Park, 2008 WL 565510 (N.D. Ill. 2008): summary judgment granted in matter where plaintiff claimed that village discriminated against it due to its owners being of Egyptian origin and Muslim faith.

Nelson v. Village of Lisle, 437 Fed. Appx. 490 (7th Cir. 2011): summary judgment granted to Defendant police-officer and employer as the arrest was supported by probable cause. Plaintiff’s petition for a writ of certiorari denied by the United States Supreme Court.

Perkins v. Village of Flossmoor, et al., 2011 C 8528: April 2016 jury trial where plaintiff was allegedly falsely arrested and wrongfully incarcerated for 3.5 years before being acquitted of all criminal charges. Plaintiff’s counsel demanded $8 million from the jury that returned a verdict of not guilty for all defendants. No post-trial motion or appeal was filed.

Sandefur v. Village of Hanover Park, 862 F.Supp.2d 840 (N.D. Ill. 2012): summary judgment granted to Village and its officers when off-duty sheriff’s deputy briefly detained after a weapon was seen by officers in attendance at a board meeting. Officers entitled to conduct Terry stop and entitled to qualified immunity. No appeal taken.

Premises Liability:

Handke v. Allied Tube and Conduit, 367 Ill.App.3d 1084 (1st Dist. 2006): summary judgment in favor of defendant reversed on the issue of proximate cause and adherence to Kimbrough v. Jewel Cos., 92 Ill.App.3d 813, finding that plaintiff’s inability to recall what caused him to fall was not decisive.

Coleman v. Village of Riverside, 2014 L 11819: summary judgment granted when court found that the means and methods by which the village officials address the need to repair village infrastructure was discretionary in nature pursuant to 745 ILCS 10/2-201.

Contreras v. Village of Park Forest, 2015 L 769: summary judgment granted in favor of municipal defense when plaintiff could not provide evidence regarding defendant’s actual or constructive notice of debris that caused her to fall down flight of stairs.

Doyle v. Village of Tinley Park, 2018 IL App (1st) 170357: summary judgment affirmed where plaintiff-homeowners unable to establish that Village’s response to drainage complaints was not subject to 2-201 discretionary immunity.

Kraft v. Village of Buffalo Grove, 2011 L 1123: summary judgment granted based upon “recreational immunity” statute for trip and fall over electrical cords at outdoor festival.

Cacioppo v. Village of Wilmette, 2007 L 11608: summary judgment granted when plaintiff unable to establish that ice patch was unnaturally formed.

Del Missier v. Village of Lake Forest, 2013 L 381: summary judgment granted for non-actionable sidewalk defect located in busy commercial district.

Johnson v. Village of Brookfield, 2009 L 11716: summary judgment granted on issued of “intended and permitted” user of alleyway where accident occurred.

Krebs v. Village of Schaumburg, 2006 L 9298: summary judgment granted in matter involved accident attributed to a unmarked tent pole.

Krol v. Village of Wilmette, 2016 L 5572: summary judgment granted when objective evidence presented by Village is entirely contrary to testimony from plaintiff.

Sala v. Village of Munderlein, 2009 L 218: summary judgment granted pursuant to 745 ILCS 10/3-105 of the Tort Immunity Act when plaintiff attributed her injuries to mounds of snow pile by municipal employees.

Savoy v. Village of Lincolnwood, 2013 L 5160: summary judgment granted based upon “open and obvious” defense when plaintiff attributed fall to gravel path in front of residence.

Sickel v. Village of Brookfield, 2013 L 1171: summary judgment granted when court found that plaintiff was not an intended and permitted user of driveway apron.

Commercial Litigation:

Current Technologies v. City of Countryside, 2007 L 65014: summary judgment granted in breach of contract and tortious interference action brought by IT vendor.

FAM Productions v. A La Carte Entertainment, 2010 L 13006: matter dismissed when plaintiff claimed that defendant breached contract by withholding revenue from promotional event attended by Sean Combs.

Morris v. Full Throttle Marine Inc., 2014 MR 1059: bench trial finding of “not guilty” in matter where former customer claimed marine repair facility performed unauthorized work and wrongfully refused to release vessel until amounts due were paid in full.

Patrick H. O’Connor 

Patrick H. O’Connor began his career as an associate with this firm, then Russell W. Hartigan & Associates and was elevated to partnership in 2004. He attended the University of Illinois at Champaign-Urbana, receiving his degree in Political Science. From there, Patrick attended Northern Illinois University College of Law, where he graduated cum laude. He was selected as a member of the Law Review at Northern Illinois, and received the Francis G. May Award for Achievement in Criminal Law.

In the more than twenty-five years Patrick has been in practice, he has argued in both State and Federal matters on behalf of his clients. While Illinois does not recognize specializations within the practice of law, Patrick has focused the majority of his efforts on the defense of municipalities and general civil defense work, including insurance coverage litigation. He has also successfully represented pro se clients in Federal matters before the U.S. District Court for the Northern District of Illinois. His success is reflected in the numerous published opinions in both Illinois and Federal courts through the years.

Bar Admissions:


  • U.S. District Court for the Northern District of Illinois
    • Member, Federal Trial Bar
  • U.S. District Court for the Central District of Illinois
  • U.S. Seventh Circuit Court of Appeals

Areas of Practice

  • Insurance and Municipal Defense
  • Civil Rights
  • Subrogation
  • Personal Injury
  • Business Litigation
  • Divorce


  • Illinois State Bar Association
    (Section Counsel Member of Civil Practice and Procedure)
  • St. Giles Mens Society

Representative Cases

Vacala v. Village of LaGrange, 636 N.E.2d 812, 260 Ill.App.3d 599 (1st Dist. 1994): Analysis of immunity for signs and pavement markings

Smith v. Evanston, 637 N.E.2d 1269, 260 Ill.App.3d 925 (1st Dist. 1994): Established “loss of normal life” as an element of recoverable damages

Murphy v. General Motors, 672 N.E.2d 371, 285 Ill.App.3d 278 (1st Dist. 1996): Analysis of admissibility of expert affidavit in opposition to motion for summary judgment

Douglass v. Dolan, 675 N.E.2d 1012, 286 Ill.App.3d 181 (2nd Dist. 1997): Summary judgment affirmed in accident involving motorcycle

Home Insurance v. Bauman, 684 N.E.2d 828, 291 Ill.App.3d 834 (1st Dist. 1997): Summary judgment affirmed in matter involving waiver of subrogation rights pursuant to contract

Lococo v. XL Disposal, 717 N.E.2d 823, 307 Ill.App.3d 684 (3rd Dist. 1999): Analysis regarding Rule 213 disclosures of expert witness opinions and their admissibility

Crowley v. Berwyn, 713 N.E.2d 1194, 306 Ill.App.3d 496 (1st Dist. 1999): Summary judgment affirmed in grant of immunity for frontline firefighter pursuant to Tort Immuity Act

Yaccino v. State Farm, 804 N.E.2d 677, 346 Ill.App.3d 431 (1st Dist. 2004): Municipalities not obligated to contribute towards settlement/judgment on a pro rata basis with private insurer

Williams v. Evanston, 883 N.E.2d 85, 378 Ill.App.3d 590 (1st Dist. 2007): Summary judgment affirmed pursuant to 5-106 of Tort Immunity Act for municipal paramedics involved in accident while responding to emergency call

Zappia v. St. Paul Fire and Marine, 847 N.E.2d 597, 364 Ill.App.3d 883 (1st Dist. 2006): First District held that a trial de novo clause in an underinsured motorist policy does not violate public policy

Buenz v. Frontline, 882 N.E.2d 525, 368 Ill.App.3d 10 (1st Dist. 2006); 227 Ill.2d 302 (Ill. 2008): Indemnification clause in non-construction contract can indemnify a party against all claims, expenses and attorneys’ fees