“1. The following shall not be registered, or if registered, shall be liable to be declared invalid: (a) Signs which cannot constitute a trade mark; (b) Trade marks which are devoid of any distinctive character; (c) Trade marks which consist exclusively of signs or indications which may serve, in trade, to designate the kind, quality, quantity, intended purpose, value, geographical origin, or the time of production of the goods or a rendering of the service, or other characteristics of the goods or service; (d) Trade marks which consist exclusively of signs or indications which have become customary in the current language or in the bona fide and established practices of the trade.” ……. (g) Trade marks which are of such a nature as to deceive the public, for instance as to the nature, quality or geographic origin of the goods or service." The Directive permits registration of a mark falling within paragraph 1(b), (c) or (d) if it is distinctive in fact. Article 3(3) says: "A trade mark shall not be refused registration or be declared invalid in accordance with paragraph 1(b), (c) or (d) if, before the date of application for registration and following the use which has been made of it, it has acquired a distinctive character”
"37. It is clear from those two provisions taken together that the purpose of the prohibition of registration of purely descriptive signs or indications as trade marks is, as both Procter & Gamble and the OHIM acknowledge, to prevent registration as trade marks of signs or indications which, because they are no different from the usual way of designating the relevant goods or services or their characteristics, could not fulfil the function of identifying the undertaking that markets them and are thus devoid of the distinctive character needed for that function."
"The trade mark shall not entitle the proprietor to prohibit a third party from using, in the course of trade, (a) his own name or address. ….. provided he uses them in accordance with honest practices in industrial or commercial matters."
“In determining the distinctive character of a mark … the national court must make an overall assessment of the greater or lesser capacity for the mark to identify the goods or services for which it is registered as coming from a particular undertaking , and thus to distinguish those goods or services from those of other undertakings”
"extensive use of a sign which consists of the shape of the goods may be sufficient to give the sign a distinctive character for the purposes of Art3(3) of the Directive in circumstances where, as a result of that use, a substantial proportion of the relevant class of persons associates that shape with that trader and no other undertaking or believes that shape to come from that trader."