20As regards the context of which the first sentence of Article 23(1) of the Regulation is part, the Court observes, first of all, that the second sentence of that paragraph qualifies the rule set out in that first sentence as regards ‘third parties who have acquired rights’ in the trade mark after the date of the legal act in question but who knew of the act at the date on which the rights were acquired. Article 23(2) establishes an exception to that rule in the case of a ‘person who acquires the Community trade mark or a right concerning the Community trade mark’ by way of transfer of the whole of the undertaking or by any other universal succession. Accordingly, an interpretation of Article 23(1) and (2) of the Regulation which is both literal and schematic gives support to the idea that it, as a whole, is intended to govern the enforceability of the legal acts referred to in Articles 17, 19 and 22 of the Regulation in respect of third parties who have, or are likely to have, rights in the Community trade mark.