1-6 months
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.
Polish Intellectual Property Office
English: Patent Office of the Republic of Poland, abbreviation: PPO
Website: uprp.gov.pl
Polish invention patent search: Wyszukiwarka prosta (uprp.gov.pl)
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)
no
4-5 years
If disclosed by the author or his successor, the novelty grace period shall be enjoyed within 12 months after the first disclosure.
1-6 months
Reinstatement of priority is accepted on grounds of "due care."
25 years