Microsoft and the European Union are engaged in an important antitrust court case. It must be Wednesday.

The Microsoft corporation is no stranger to antitrust lawsuits. Way back in 1989, the United States Federal Trade Commission began an investigation. The FTC was concerned that IBM and Microsoft had formed an alliance that effectively ensured all PCs would ship with the Microsoft version of the DOS operating system. Whether you agree with it or not, the company has a reputation for leveraging its influence to dominate the market.

Skipping ahead to today, Microsoft faces another antitrust case. This time the investigative body is the European Commission (EC), a legislative body of the European Union (EU). The EC has leveled antitrust charges on Microsoft before. This time the focus is on Microsoft’s browser, Internet Explorer.

The EC has a problem with the way Microsoft bundles Internet Explorer with the Windows operating system.