BMW AG is the proprietor of the well-known BMW logo, registered inter alia in class 3 (polishes and cleaning preparations) and class 12 (motor vehicles). Verimark (Pty) Ltd marketed and sold ‘Diamond Guard’ car care products through direct-response television advertising, packaging, and internet material. In these advertisements, BMW vehicles were used to demonstrate the effectiveness of Diamond Guard, with the BMW logo clearly visible on the vehicles. BMW contended that this use constituted unauthorised trade mark infringement under s 34(1)(a) and s 34(1)(c) of the Trade Marks Act 194 of 1993, alleging both primary infringement and dilution. The High Court granted an interdict in respect of the class 3 (polish) mark but dismissed the claim relating to the class 12 (car) mark. Both parties appealed to the Supreme Court of Appeal.