47According to the case-law, the concept of the ‘informed user’ must be understood as lying somewhere between that of the average consumer, applicable in trade mark matters, who need not have any specific knowledge and who, as a rule, makes no direct comparison between the trade marks at issue, and the sectoral expert, who is an expert with detailed technical expertise. Thus, the concept of the informed user may be understood as referring, not to a user of average attention, but to a particularly observant one, either because of his or her personal experience or his or her extensive knowledge of the sector in question (judgment of 20 October 2011, PepsiCo v Grupo Promer Mon Graphic, C‑281/10 P, EU:C:2011:679, paragraph 53).