Written/Reviewed by:
Larson Law Injury Lawyers
Last Updated: May 6, 2026
Read Time: 7 min
When settlement negotiations fail to produce fair compensation, filing a lawsuit may be necessary to recover what you deserve. Understanding how the Illinois court system works and what to expect during litigation can help you make informed decisions about your case. While most personal injury claims settle before trial, being prepared to go to court demonstrates to insurance companies that you are serious about pursuing full compensation. An Addison, IL personal injury lawyer can guide you through the litigation process and advocate for your interests at every stage.
Overview of the Illinois Court System
Illinois has a unified court system with three levels: circuit courts, appellate courts, and the Supreme Court. Personal injury lawsuits are filed and tried in the circuit courts, which serve as the trial courts of general jurisdiction.
The Illinois Courts system is divided into 24 judicial circuits covering all 102 counties. Each circuit has at least one circuit court where civil cases, including personal injury claims, are heard. Cook County, which includes Chicago and surrounding areas, has its own circuit court system and handles more civil cases than any other circuit in the state.
Within the circuit courts, cases are assigned to different divisions based on subject matter and the amount in controversy. Personal injury cases involving significant damages are typically assigned to the Law Division, while smaller claims may be heard in other divisions.
Where to File Your Personal Injury Lawsuit
Determining the proper venue for your lawsuit is an important first step. Generally, you may file a personal injury lawsuit in the county where the defendant resides, where the defendant conducts business, or where the injury occurred.
For car accidents and other incidents that occur in DuPage County, including Addison and surrounding communities, the case would typically be filed in the DuPage County Circuit Court. Accidents occurring in Cook County would be filed in the Circuit Court of Cook County.
Filing in the wrong venue can result in delays if the defendant successfully moves to transfer the case. Your attorney will evaluate the facts of your case and determine the most appropriate and strategically advantageous venue.
The Complaint and Summons
A personal injury lawsuit begins when your attorney files a complaint with the circuit court clerk. The complaint is a formal legal document that identifies the parties, describes the facts of the case, explains the legal basis for your claim, and states the damages you are seeking.
Under Illinois law, the complaint must include enough factual detail to put the defendant on notice of the claims against them. For negligence cases, the complaint will describe the defendant’s duty of care, how they breached that duty, how that breach caused your injuries, and the damages you suffered. The resources on understanding negligence and understanding liability explain these elements in detail.
Once the complaint is filed, a summons is issued and both documents are served on the defendant, formally notifying them of the lawsuit. The defendant then has a limited time, typically 30 days, to file a response.
The Defendant’s Response
After being served, the defendant will file an answer to your complaint. The answer admits or denies each allegation and may raise affirmative defenses, such as arguing that you were partially at fault under Illinois comparative fault rules.
The defendant may also file a motion to dismiss, arguing that even if all your allegations are true, you have not stated a valid legal claim. If the motion is denied, the case proceeds to discovery.
The Discovery Process
Discovery is the formal process by which both sides gather information and evidence from each other and from third parties. Discovery can be the longest phase of litigation, often lasting six months to a year or more in complex cases.
Common discovery tools include:
Interrogatories are written questions that must be answered under oath. You may be asked about the accident, your injuries, your medical treatment, your employment history, and other relevant topics.
Requests for Production require parties to produce documents such as medical records, employment records, photographs, and insurance policies.
Depositions are in-person interviews conducted under oath and recorded by a court reporter. You, the defendant, witnesses, and treating physicians may all be deposed. Deposition testimony can be used at trial.
Requests for Admission ask the other party to admit or deny specific facts, narrowing the issues that must be proven at trial.
Independent Medical Examinations may be requested by the defendant. Their insurance company may require you to be examined by a doctor of their choosing, who will provide an opinion on your injuries.
Discovery allows both sides to evaluate the strengths and weaknesses of the case. Many cases settle during or after discovery once the parties have a clearer picture of the evidence.
Motions and Pre-Trial Proceedings
Throughout the litigation process, either party may file motions asking the court to rule on specific issues. Common motions include motions to compel discovery, motions to exclude certain evidence, and motions for summary judgment.
A motion for summary judgment asks the court to rule in favor of one party without a trial because there are no genuine disputes of material fact. If granted for the defendant, your case would be dismissed. If denied, the case proceeds toward trial.
The court may also require the parties to participate in a settlement conference or mediation before trial. A neutral mediator helps the parties negotiate a resolution. A significant percentage of cases settle at this stage.
Trial
If settlement efforts fail, your case will proceed to trial. In Illinois, personal injury plaintiffs have the right to a jury trial if they request one. Alternatively, the parties may agree to a bench trial where the judge decides the case.
At trial, both sides present opening statements, call witnesses, introduce evidence, cross-examine opposing witnesses, and deliver closing arguments. The plaintiff has the burden of proving each element of the case by a preponderance of the evidence, meaning it is more likely true than not.
If the jury or judge finds in your favor, they will determine the amount of damages you are entitled to recover. The verdict may include compensation for medical expenses, lost wages, pain and suffering, and other losses.
Trials can last from a few days to several weeks depending on the complexity of the case. The resources on case timelines and calculating damages provide additional context.
Appeals
Either party may appeal an unfavorable verdict to the Illinois Appellate Court. Appeals are based on alleged legal errors made during the trial, not on disagreements with how the jury weighed the evidence. The appellate court may affirm the verdict, reverse it, or order a new trial.
Appeals can add one to two years or more to the resolution of a case. In rare instances, a party may seek further review from the Illinois Supreme Court, though the high court accepts only a small number of cases each year.
Court Filing Fees and Costs
Filing a personal injury lawsuit requires payment of filing fees to the circuit court clerk. Fees vary by county and the amount in controversy. Additional costs may include service of process fees, deposition costs, fees for court reporters, and charges for obtaining medical records.
When you work with Larson Law Injury Lawyers on a contingency fee basis, we advance these costs on your behalf. You do not pay anything out of pocket, and costs are reimbursed from your settlement or verdict.
Statute of Limitations Reminder
You must file your lawsuit within the time limits set by the statute of limitations. For most personal injury cases in Illinois, you have two years from the date of injury to file. Missing this deadline forfeits your right to pursue compensation through the courts.
Do not wait until the deadline approaches to consult an attorney. Building a strong case takes time, and filing early preserves your options.
When Litigation Makes Sense
Not every case needs to go to trial. Settlement is often the faster and less stressful path to compensation. However, litigation may be necessary when the insurance company refuses to offer fair value, disputes liability, or acts in bad faith.
Having an attorney who is willing and able to take your case to trial strengthens your negotiating position. Insurance companies know which lawyers regularly try cases and adjust their settlement offers accordingly.
If you have been injured and need to understand your options for pursuing a lawsuit, contact Larson Law Injury Lawyers for a free consultation. We handle personal injury cases on a contingency fee basis, so you pay nothing unless we win.
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Personal Injury Resources
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Locations
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La Grange
505 LaGrange Rd
La Grange, IL 60525
Whether you've been injury or are dealing with a complex legal dispute, reach out. We offer free initial consultations for all injury cases.