Litigation 101: A Step-by-Step Guide to Bringing a Lawsuit in Illinois

In our first Litigation 101 article, we discussed how to approach key phases of a lawsuit after being sued. This article is the second in our Litigation 101 series. It focuses on the flip side: how to sue someone else. 

Suing someone is a serious decision that requires careful thought and preparation. Before pursuing legal action, it’s crucial to reflect on the issue and understand the steps involved in bringing a lawsuit. This article outlines the basics to help you approach the process with confidence and make informed decisions.

Step 1: Assess the Validity of Your Claim

The first step is determining whether you have a valid claim. Not every wrong or grievance constitutes grounds for a lawsuit. Legal claims often require proving specific elements, which can vary depending on the type of case. Consulting with an experienced attorney is essential to evaluate your situation and determine whether you have a viable case.

In some instances, sending a demand letter to the opposing party may resolve the issue without litigation. A demand letter formally outlines your grievance and requests a resolution, potentially saving you time and legal expenses. Exploring alternative dispute resolution (ADR) methods before initiating a lawsuit can often lead to quicker and less costly outcomes.

Step 2: File a Complaint

If informal efforts to resolve the matter are unsuccessful, the next step is filing a complaint. A complaint is a legal document that outlines your claims and the relief you are seeking. This stage requires careful attention to detail and legal strategy, so consulting an attorney is strongly recommended.

Choosing the Proper Court

Selecting the correct court to file your case in is more complex than it might seem. Courts have specific rules regarding jurisdiction—the authority to hear a case—and venue, which determines the most appropriate location for the trial. Multiple courts may have jurisdiction over your case, but strategic considerations often influence the choice of where to file.

Service of Process

Once the complaint is filed, the next step is serving the defendant with a summons and a copy of the complaint. This process, known as “service of process,” must follow strict guidelines based on the jurisdiction. Proper service ensures the defendant is notified of the lawsuit and their obligation to respond.

Step 3: Engage in Discovery

After the defendant responds to the complaint, the discovery phase begins. For more information on responding to complaints, please review our "Litigation 101: A General Guide" article.

Discovery is a critical part of litigation where both sides gather evidence and information to support their claims. Common discovery methods include:

• Interrogatories: Written questions that the opposing party must answer under oath.
• Document Requests: Requests for specific documents relevant to the case.
• Depositions: Oral testimony taken under oath, usually in the presence of attorneys for both parties.

Discovery can be time-consuming and procedural rules vary by jurisdiction. Adhering to deadlines and processes is essential to avoid jeopardizing your case.

Step 4: Consider Settlement or Alternative Dispute Resolution (ADR)

Many lawsuits are resolved without going to trial. During or even before discovery, parties often explore settlement options or ADR methods, such as:



• Negotiation: Informal discussions between parties or their attorneys to reach a mutually acceptable resolution.
• Mediation: A facilitated negotiation led by an impartial mediator who helps the parties reach an agreement.
• Arbitration: A more formal process where an independent arbitrator hears both sides and renders a binding decision.

These alternatives can save significant time and costs while providing more control over the outcome.

Step 5: Present Your Case at Trial

If settlement efforts fail, the case proceeds to trial. During the trial, both parties present evidence and arguments before a judge or jury, who will decide the outcome. Trials can be lengthy, expensive, and unpredictable.

In Illinois, approximately 96% of civil cases are resolved before reaching trial. This statistic highlights the importance of exploring settlement or ADR methods where possible. However, if your case goes to trial, working closely with an attorney ensures your rights and interests are effectively represented.

Step 6: Appeal the Decision

If either party is dissatisfied with the trial court’s decision, they may file an appeal. An appeal asks a higher court to review the case for legal errors that may have impacted the outcome. Appeals focus on the application of law rather than re-examining evidence or witness testimony.

The appeals process is complex and requires skilled legal representation. Discussing the merits of an appeal with an attorney can help you weigh the potential benefits and drawbacks of continuing your legal fight.

Final Thoughts

Bringing a lawsuit in Illinois involves multiple steps, each with its own set of rules and challenges. From assessing the validity of your claim to navigating discovery, settlement negotiations, and potentially a trial, every stage requires careful planning and legal expertise.

Consulting with an experienced attorney ensures you’re well-prepared and positioned to achieve the best possible outcome. If you have questions regarding initiating a lawsuit or managing a current legal dispute contact Sarah Reusché, at sreusche@lavellelaw.com, to schedule a consultation.