Microsoft has been ordered to pay Lucent-Alcatel $1,5-billion in damaged for infringing on petents for MP3 encoding and decoding technology. 

The case began in 2003 when the then Lucent Technologies acted against Dell and Gateway Computer for infringing on 15 patented technologies it said were being used in Microsoft's Windows Media Player.
Microsoft filed a countersuit to discourage additional legal action against its customers.
Two of the patents were dismissed and the remainder split into six groups. Yesterday's ruling is on the first of the groups, so a further five remain.
Microsoft says it will appeal if necessary, claiming that the technology was licensed – for $16-million – from Fraunhofer.