Microsoft’s lawyers disagree, however, and entered a variety of arguments last May that the fine is too high, and was entered based upon “manifest errors” in the EU’s process. With copies of the arguments released publicly earlier this week (PDF), its demands to annul the fine are now available for perusal worldwide:

• The EU “erred” in its decision to subject Microsoft to regular, periodic fines while the company released copies of its interoperability specifications, due to the fact that Microsoft’s pricing for the documentations was not in line with the EU’s definition of “reasonable,” – the EU never explicitly stated what it considered a “reasonable” price to be.
• Further, licensing rates for information on its proprietary protocols – despite not passing the EU’s benchmark of reasonability – were more than 30 percent lower what industry experts PriceWaterhouseCoopers determined to be a fair price for “comparable technology.” (Ars Technica questioned this finding early last year, noting that in many cases ‘comparable technology’ was open source, and therefore free.)
• Microsoft should not have been subjected to a “heightened patentability test,” where the innovation of its trade secrets was placed under scrutiny in order for the EU to decide whether or not Microsoft should have charged royalties for the use of its trade secrets.
• The EU based some its assessment reports on documents obtained that courts later determined to be “unlawful.”
• Microsoft was denied its “right” to be heard due to the EU’s failing to give Microsoft the opportunity to speak up after the period for which it was fined, preventing the company from “commenting on all relevant aspects of the case.”
• And, simply, the fines imposed are “excessive and disproportionate,” particularly due to the fact that the EU chose to challenge its licensing practices.

Additionally, Microsoft previously appealed the fine to Europe’s Court of First Instance last May – however little has developed in the appeal since its filing.

The company’s trouble began in 2004 when the EU demanded Microsoft provide competitors the ability to connect to software running under its Windows platform (applications like Exchange and Active Directory). Third-party attempts to connect to Microsoft technologies have, typically, been written by reverse engineering the company’s communications protocols.