Reinstatement of priority is accepted on grounds of "due care."
- 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
 
- 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.
 
- 20 years 
- 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 : 12 months from earliest priority date.
- via Nationalization of PCT : 30 months from the earliest priority date.
 
- INPI only conducts formality examination of utility model patent applications. Substantive examination may only be requested if the applicant deems it necessary. An invention protected by a patent can be protected simultaneously or successively with a utility model. To this end, applicants have a maximum of 1 year to make changes. 
- 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
 
- no 
- 3 months 
- no 
