Article 54. Names that do not enter into homonymy. The following do not enter into homonymy:

54.1. a name that is excluded from the provisions of the Code [Arts. 1.3, 8.3] (see also Articles 1.4 and 52.7);

54.2. a name that is unavailable [Art. 10.1], except as provided in Article 20;

54.3. an incorrect spelling, whether original [Arts. 32.4, 32.5] or subsequent, since it is not available in its uncorrected form [Arts. 32.4, 33.3]; and

54.4. a name that has been suppressed for the purposes of the Principle of Homonymy by a ruling of the Commission [Art. 81.2.1].