Microsoft is appealing a record European Commission fine for not complying with a milestone European Commission anti-trust ruling.

Four months after the Commission ordered Microsoft to pay $1.39bn (899m euro) for not meeting the terms of its original 2004 ruling, Microsoft said Friday it's going to court to seek "clarity".

Microsoft has filed its appeal with the European Court of First Instance to annul the Commission's February ruling

A Commission spokesperson is reportedly "confident" the fine is "legally founded".

The Commission's February fine covered the period between the 2004 decision and 22 October, 2007. The decision found that Microsoft had charged competitors too much for interoperability information for its servers.

In February, Competition Commissioner Neelie Kroes had said Microsoft was the first company in 50 years of EU competition policy that had to be fined for failure to comply with an anti-trust decision.®

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