Airbus, on the contrary, returned the Type Certificate to the CAA/DGAC and thereby basically "washed their hands" of Concorde. Even if they were willing to transfer the necessary technical information to a third party, it's extremely unlikely they still would be capable of doing so.
I have always been of the possibly not substantiated opinion that all was done to make sure she would never fly again. I fully understand the significant costs incurred by EADS to provide maintenance but it would have been possible to nicely package all remaining spares and technical documentation, not mentioning the reckless butchering of many airframes.