Reinstatement of priority is accepted on grounds of "due care."
yes. Before the applicant receives the final decision, it may be proposed to change the type of invention from invention to utility model.
Filing Language: Portuguese Necessary documents:
- Exterior Design Picture (Six Views)
 - A Brief Description
 
Attachments (if any):
- Power of Attorney
 - Certified Priority Document
 - Declaration of Ownership/Certification of Employment/Assignment of priority
 - Assignment for Patent Right Transfer
 
20 years
The initial protection is 6 years, which can be extended twice, up to a maximum of 10 years.
- via Paris Convention : 12 months from earliest priority date.
 - via Nationalization of PCT : 30 months from the earliest priority date.
 
- Licensing Fee: None.
 - Annuity: pay once every 5 years, and must be paid within 6 months before the due date of the application. If the annual fee is overdue, it can be paid within a grace period of 6 months, and a 50% penalty is required.
 
yes. Before the applicant has received a final decision, an application to change the type of invention from a utility model to an invention may be proposed.
INPI only conducts formality examination of design patent applications.
Portuguese National Institute of Industrial Property
English: Portuguese Institute of Industrial Property (INPI)
URL: https://inpi.justica.gov.pt/
Portuguese Utility Model Patent Search: Pesquisa Online - Patentes (justica.gov.pt)
- via Paris Convention : 6 months from earliest priority date.
 - Hague Agreement route: 6 months from earliest priority date.
 - EU appearance route: 6 months from the earliest priority date.