C.________ had requested the payment of a fee following the brokering of a settlement agreement with a state petroleum company on behalf of A.________ and B._________. The latter companies refused to pay and an arbitration with its seat in Geneva was initiated under the Swiss Rules, before three arbitrators. C.________ partially prevailed, and the Defendants appealed to the Federal Tribunal, citing violations of their right to be heard and a lack of equal treatment of the parties.