The Supreme Court – Civil Chamber in its judgment of 15 November 2002 case file II CKN 1289/00, published in the Supreme Court’s Bulletin of 2003, No 6, p. 7, the Jurisprudence of the Supreme Court, the Civil Chamber (in Polish: Orzecznictwo Sądu Najwyższego Izba Cywilna) of 2004, No 3, item 44, p. 66, held that the development of a grid of entries, and a method how to define the composition of difficult entries (lexemes/lemmas) are the manifestation of creative activity of the authors of the Polish language dictionary within the meaning of article 1 of the Polish Act on Authors Rights and Neighbouring Rights.
See also “Polish regulations on copyright” and “Polish case law on copyright“.