Microsoft will file its official appeal to the European Commission's decision earlier this year that it broke European competition law.
At the close of a five-year investigation into Microsoft's business practices in the Europe Union, the commission fined the supplier a record €497.2m (£330m) and restricted its business practices in the region.
The company will file its appeal brief with the European Court of First Instance in Luxembourg next week.
"We look forward to filing our appeal and believe we have a very strong case to present to the court," said Microsoft spokesman Jim Desler.
The commission concluded that Microsoft broke EU competition law by using its near monopoly in the PC operating system market to gain advantage in the markets for work group server operating systems and media players.
The commission also ordered Microsoft to offer a version of Windows without the Windows Media Player and to disclose details of the software interfaces its products use to communicate with Windows.
An appeal to the court will take at least three years to conclude. In the meantime, the court may turn down Microsoft's upcoming request to suspend the remedies until after the appeal, forcing the company to change the way it does business in Europe almost immediately.
Despite Microsoft's efforts to settle the matter, EU competition commissioner Mario Monti said the ruling is about protecting customer choice and innovation. Microsoft insisted the ruling stifled innovation.
Joris Evers writes for IDG News Service