How long is the PCT period for Luxembourg invention patent application?

• via Paris Convention : 12 months from earliest priority date.
• via Nationalization of PCT : 20 months from the earliest priority date.
• Validation of European Patent in EPO member states: within 3 months from the date of granted of the European invention.

*Luxembourg is one of the only countries in the world that still retain Chapter I for 20 months to enter the national phase (the other is Tanzania). If it takes 30 months to enter the national phase, a request for international preliminary examination must be submitted.