In 1995, Polish Scientific Publishers PWN, a long-time publisher of dictionaries, sued Kurpisz, a new publishing house, for plagiarizing their large dictionary of Polish. The case was closed in favor of PWN in 2005, hitting the Supreme Court along the way.
Among the evidence against Kurpisz was their entry on the nonce word "amikus" (meaning "friend"), which they illustrated with the quotation "spijał się ze swoimi amikusami" (he was getting drunk with his friends) but could not tell the court where they had gotten the quotation from. Nowadays, with libraries digitizing every flimsy old book, they would find the source easily.
Among the evidence against Kurpisz was their entry on the nonce word "amikus" (meaning "friend"), which they illustrated with the quotation "spijał się ze swoimi amikusami" (he was getting drunk with his friends) but could not tell the court where they had gotten the quotation from. Nowadays, with libraries digitizing every flimsy old book, they would find the source easily.