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 is required to enter the national phase of an international patent application under the PCT in Poland?
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?
When applying for trademark registration, do not forget about the author
Getting the Deal Through – Patents 2012