Spain
Answer ... Decisions of the Council of the National Markets and Competition Commission (CNMC) may be appealed by the notifying parties or any other interested party before the Court of Appeal within two months of the date following notification of the decision. The Court of Appeal can undertake a full review of the administrative proceeding, taking into account all facts and evidence.
Judgments of the Court of Appeal may be further appealed in cassation before the Supreme Court. The Supreme Court cannot review the assessment of facts carried out by the Court of Appeal and will analyse errors of law only.
Further, decisions of the Council of Ministers may be appealed before the Supreme Court within two months.
Spain
Answer ... Third parties can appeal the CNMC’s decisions before the Court of Appeal, provided that they can prove that they have a legitimate interest in the case.