The binding legal principles established are: (1) Under the Trade Marks Act 62 of 1963, shapes and configurations of articles were not registrable as trade marks, and characterizing them as 'devices' did not alter this prohibition. (2) A registered trade mark must be capable of distinguishing goods in the trade mark sense - indicating source of origin - and not merely be distinctive in terms of appearance or design. Sole patterns or shapes perceived by the public as ornamental or functional design features rather than source identifiers lack the requisite trade mark character. (3) The question of whether a party is an 'interested person' entitled to apply for rectification under section 24 of the 1993 Act is determined at the time of litis contestatio, and the opposing party cannot destroy that standing through subsequent actions. (4) A person in the trade area covered by an impugned trade mark is in principle an interested party, having a legitimate interest in clearing the register of objectionable registrations. (5) Under section 70 of the 1993 Act, the validity of trade marks registered under the 1963 Act must be determined according to the law then in force, and registrations 'contrary to law' (such as shapes) fall outside the protection of section 42 of the 1963 Act.