yes
Reinstatement of priority is accepted on grounds of "due care."
no
Polish Intellectual Property Office
English: Patent Office of the Republic of Poland, abbreviation: PPO
Website: uprp.gov.pl
Polish Utility Model Patent Search: Wyszukiwarka prosta (uprp.gov.pl)
yes
yes. An invention applicant may propose to change the type of invention from an invention to a utility model during the process of examining the application or within two months from the date of the final decision on the refusal to grant a patent. The utility model application shall be deemed to have been filed from the date of the invention application. A utility model application converted from an invention must fully meet the requirements for utility model documents.
no
A 6-month novelty grace period is available if the disclosure is caused by a third party in bad faith.
no
Reinstatement of priority is accepted on grounds of "due care."
- 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: 3 months from the date of European patent grant.