Judgment_paragraph 29 · Prezes Urzędu Komunikacji Elektronicznej and Petrotel sp. z o.o. w Płocku v Polkomtel sp. z o.o (C-231/15)

29It should be recalled in that regard that the principle of legal certainty, the corollary of which is the principle of the protection of legitimate expectations, requires, on the one hand, that rules of law must be clear and precise and, on the other, that their application must be foreseeable by those subject to them (see, to that effect, judgments of 10 September 2009, Plantanol, C‑201/08, EU:C:2009:539, paragraph 46 and the case-law cited, and of 11 June 2015, Berlington Hungary and Others, C‑98/14, EU:C:2015:386, paragraph 77 and the case-law cited).