Appellation Châteauneuf-du-Pape, obtained legal recognition of the Côtes du Rhône appellation of origin in 1937. The AOC seal, or Appellation d'Origine Contrôlée, was created and mandated by French laws in the 1950s, 1960s, and 1970s. Before 1935, despite the fact that the INAO was yet to be created, champagne enjoyed an appellation control by virtue of legal protection as part of the Treaty of Madrid. The treaty stated that only sparkling wine produced in Champagne and adhering to the standards defined for that name as an Appellation d'Origine Contrôlée could be called champagne. This right was reaffirmed in the Treaty of
Geographical indications and traditional specialities in the European Union colonised by the fungus "Penicillium roqueforti" that grows in these caves. This system is similar to appellation systems used throughout the world, such as the "appellation d'origine contrôlée" (AOC) used in France, the "denominazione di origine controllata" (DOC) used in Italy, the "denominação de origem controlada" (DOC) used in Portugal, the "denominación de origen" (DO) system used in Spain and the "Denumire de origine controlată" (DOC) system used in Romania. In many cases, the EU PDO/PGI system works parallel with the system used in the specified country, and in some cases is subordinated to the appellation system that was already