NTH Haustechnik GmbH v EM
4. Articles 7 and 8 of the Charter of Fundamental Rights, Article 5(1) of Regulation 2016/679, point (c) of the first subparagraph of Article 6(1) of that regulation, read in conjunction with Article 6(3) thereof, and the principle of 'data minimisation'
must be interpreted as not precluding a national court from using evidence containing personal data obtained in breach of the right to privacy and the right to the protection of personal data by the party which transmitted such data to that court, where that party's legitimate interest in such processing does not outweigh the interest in simply adducing the facts on which it relies. By contrast, before disclosing those data to the parties or third parties, that court must verify that such data are limited to what is necessary in relation to the purposes for which such disclosure is made and, as appropriate, take certain measures to minimise the impediment to the right to the protection of personal data which such disclosure is likely to entail.