Kaczmarek v. Microsoft Corp

Court

District Court, N.D. Illinois (N.D. Ill.)
Official Court Website →

Assigned judge

Ruben Castillo · 5,232 cases in index

Docket number

1:98-cv-07921

Nature of suit

195 Contract product liability
Product-liability claims framed as a breach of contract or warranty.

Jurisdiction

Diversity of citizenship

Date filed

12/10/1998

Date terminated

03/16/1999

32,341 Contract cases in this court are indexed here.

Parties

• plaintiff · Kaczmarek · 42 cases
• defendant · Microsoft Corporation Cybersecurity · 1819 cases

Part of a Larger Litigation Pattern

This is one of 1,820 Contract cases in our index naming Microsoft Corporation — a possible mass-tort or coordinated-litigation cluster.

• Patel v. Microsoft Corporation
  District Court, W.D. WashingtonFiled 05/19/2026
• Myriad Software LLC v. Microsoft Corporation
  District Court, W.D. WashingtonFiled 11/23/2025
• Samson v. Microsoft Corporation
  District Court, E.D. VirginiaFiled 10/23/2025
• Brown v. Microsoft Corp
  District Court, D. MassachusettsFiled 06/19/2024
• Patel v. Microsoft Corporation
  District Court, W.D. WashingtonFiled 01/30/2024
• Jones v. Microsoft Corporation
  District Court, N.D. IllinoisFiled 06/30/2022

About Contract Lawsuits

Contract lawsuits involve disputes over an agreement between parties — claims that one side failed to perform, breached a term, or owes money under a contract. Common examples include unpaid invoices, broken business deals, and warranty or insurance disputes.

Frequently Asked Questions

What is Kaczmarek v. Microsoft Corp?

Kaczmarek v. Microsoft Corp is a federal contract lawsuit filed on 12/10/1998 in the District Court, N.D. Illinois. The case was terminated on 03/16/1999. Contract lawsuits involve disputes over an agreement between parties — claims that one side failed to perform, breached a term, or owes money under a contract. Common examples include unpaid invoices, broken business deals, and warranty or insurance disputes.

What type of case is this?

It is classified as “Contract” under the federal nature-of-suit system. Contract lawsuits involve disputes over an agreement between parties — claims that one side failed to perform, breached a term, or owes money under a contract. Common examples include unpaid invoices, broken business deals, and warranty or insurance disputes.

What court is the case in?

The case is in the District Court, N.D. Illinois, docket number 1:98-cv-07921.

When was the case filed?

Kaczmarek v. Microsoft Corp was filed on 12/10/1998. It was terminated on 03/16/1999.