Príncipe Pío (Madrid Metro) Príncipe Pío (Madrid Metro) Príncipe Pío (formerly Estación del Norte) is a multimodal station in Madrid, Spain that services Madrid Metro Line 6, Line 10, and Ramal, Cercanías Madrid commuter rail lines C-1, C-7, and C-10, as well as city buses and intercity and long-distance coaches. It is located next to the River Manzanares between the San Vicente roundabout, the Cuesta de San Vicente, the Paseo de la Florida, and the Paseo del Rey in the district of Moncloa-Aravaca. It is one of the busiest stations in the Madrid Metro and Cercanías systems. Príncipe Pío's train station has three levels.
Madrid system 1 April 1996. The Madrid Agreement and Madrid Protocol were adopted at diplomatic conferences held in Madrid, Spain. The Madrid Agreement was originally intended to provide for an international registration system, but did not achieve this for two significant reasons: Some of the large trading nations like the United States, Japan, and Canada, which have a large number of filings at the national level, did not join the Madrid Agreement due to another perceived flaw in the system: if the home registration upon which an international registration was based came under 'central attack', the international registration would be cancelled or