Step 1: Log in to the official website of the Polish Intellectual Property Office (http://www.uprp.pl/), move the cursor to "USLUGI ONLINE" in the menu bar, which is the online service bar, and click "e-Wyszukiwarka" in the drop-down bar "That is, the electronic search engine, enter the electronic search engine link entrance page;

Step 2: Click the blue word "e-Wyszukiwarka" below on the electronic search engine link entrance page to enter the patent query page ( https://ewyszukiwarka.pue.uprp.gov.pl/search/simple-search?lng=pl )

first step:

(2) On the patent query page, enter the patent number/application number in the input box, click "SZUKAJ" on the right, which is the search button, and click the corresponding patent entry according to the search results to enter the patent page.

(3) On the patent page, you can check that the legal status of the patent is valid; the effective maintenance date of the paid annual fee is 2022-03-14, and the current paid protection year is the 9th year. The annual fee payable for one protection period is PLN 650 and the maximum protection period of the patent is 2033-03-14.