Following overnight deliberation by the judges after a court hearing in Paris on Tuesday, the ICA has rejected the appeals lodged by Ferrari, Red Bull Racing, Renault. BMW Sauber and McLaren had also entered the appeal as affected parties.
FIA Realised this statement:
"The FIA International Court of Appeal has decided to deny the appeals submitted against decisions numbered 16 to 24 taken by the Panel of the Stewards on 26 March at the 2009 Grand Prix of Australia and counting towards the 2009 FIA Formula One World Championship.
"Based on the arguments heard and evidence before it, the Court has concluded that the Stewards were correct to find that the cars in question comply with the applicable regulations."
Ros Brawn stood firm in his belief that the design was legal, and confirmed that he offered rivals the chance to close off the regulations to prevent teams exploiting the diffuser designs, but they rejected the opportunity.
"If I'm frank I didn't say 'look we are going to do this diffuser if you don't accept this rule' because I'm not going to tell people what we're doing, but I explained that I felt that we should have a different set of rules to simplify what needs to be done.
"I offered them and they were rejected, so my conscience is very clear. And those rules that I put on the table would have stopped a lot of things. It would have stopped the diffuser, it would have stopped all those bargeboards around the front, and it would have cleaned the cars up.
"Because it was clear that when we started to work on the regulations that there were things that you could do, and we needed to perhaps clean them up, but nobody was interested. They are interested now."