On Friday, the mercantile court in Madrid threw out UEFA's appeal against its ruling earlier this month that stated disciplinary proceedings concerned with the founding 12 Super League clubs must be scrapped.
The Spanish pair and Italian giants welcomed the decision against what they termed "UEFA threats" and condemned European football's governing body for its "monopolistic position" over its governance of the game in a joint statement.
The case will now be assessed by the European Court of Justice in Luxembourg.
"FC Barcelona, Juventus, and Real Madrid CF welcome today's court's decision enforcing, with immediate effect, UEFA's obligation to unwind the actions taken against all European Super League founding clubs, including terminating the disciplinary proceedings against the undersigning three clubs and removing the penalties and restrictions imposed on the remaining nine founding clubs for them to avoid UEFA's disciplinary action," the statement read.