Numerous amendments to the Code of Civil Procedure regarding interlocutory appeal resulted in a situation where this means of challenge is not a uniform one nowadays, but includes legal measures of a different nature. This situation causes disputes in the legal scholarship and case law as to the place of the interlocutory appeal in the system of means of challenge. The author discusses the de lege lata models of interlocutory appeal (classical devolutive interlocutory appeal, horizontal interlocutory appeal, interlocutory appeal to the Supreme Court) and indicates the place of interlocutory appeal among the means of challenge.