4 months
OPI does not conduct substantive examination for utility models (short-term patents). If no search is carried out or search reports from other countries are provided, it will only be protected as a short-term patent.
no
- via Paris Convention : 12 months from earliest priority date.
- via Nationalization of PCT : 20 months from the earliest priority date.
*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 filed.
no
6 months before the filing date/priority date.
OPI conducts only formality examination of invention patent applications. The applicant needs to file a search request within 18 months from the filing date, or submit a search report issued by any official search agency within 18 months from the priority date, and the judgment of novelty in the search report does not affect the Luxembourg patent granted.
4 months
The novelty grace period is 12 months before the filing date/priority date.
6 months before the filing date/priority date.
6-18 months