How many years is the protection period of Portuguese invention patent application

• 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.

INPI conducts formality examination and substantive examination of invention patent applications. Substantive examination begins automatically, without the need to file a separate request.

INPI only conducts formality examination of design patent applications.

A novelty grace period of 6 months is available if:

• Disclosures caused at officially organized or officially sanctioned international exhibitions
• Disclosure resulting from being made public for reasons related to the misuse of the inventor or its predecessor owner

yes. Before the applicant receives the final decision, it may be proposed to change the type of invention from invention to utility model.

25 years

2-3 years

20 years

• via Paris Convention : 12 months from earliest priority date.
• via Nationalization of PCT : 30 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.