It was possible up to 1.11.2004, but not any more.
Who can apply for a patent or a protection right for a utility model?
What are the time limits to enter the national phase under the Chapter I and Chapter II of the PCT?
What are the effects of European patents in Poland?
When a Polish patent attorney is sufficient and when do you need a European patent attorney?
Fee changes for trademark prosecution in Poland
Patent Claim Interpretation - Global Edition (Polish Chapter)