This image is in the public domain according to Article 4, case 2 of the Polish Copyright Law Act of February 4, 1994 (Dz. U. z 2016 r. poz. 666 with later changes) "normative acts and drafts thereof as well as official documents, materials, signs and symbols are not subject to copyrights". Hence it is assumed that this image has been released into public domain. However in some instances the use of this image in Poland might be regulated by other laws.
To add your language to the list of languages supported by this template, please copy the code of Template:PD-Polishsymbol/en (or any other language version you prefer to translate) and replace the text strings in there (the form below can be used to create a translation, the English version is preloaded in the edit box). Please change the parameter lang from en (or whatever language you are translating) to the language code of your language.