There are multiple definitions - click on the translation that matches your context.

przedstawiciel/pełnomocnik procesowy z urzędu

rzeczownik

partial

official solicitor

noun

Comparative law notes

Poland

The Official Solicitor acts: - as a last resort litigation friend and in some cases solicitor, for children (other than those who are the subject of child welfare proceedings) and for adults who lack mental capacity - on behalf of the Lord Chancellor in cases of international child abduction, through the International Child Abduction and Contact Unit (ICACU) - on behalf of the Lord Chancellor in cases of international maintenance claims through the Reciprocal Enforcement of Maintenance Orders Unit (REMO). https://www.gov.uk/government/organisations/official-solicitor-and-public-trustee/about

Definitions of official solicitor

English

(England and Wales) a government appointed lawyer who acts for children and adults who are unable to manage their own affairs or to represent themselves (eg because they lack mental capacity) and who otherwise would have no legal representation

The patient was represented by the official solicitor who instructed a barrister on her behalf.