Vari-Deals 101 (Pty) Ltd v Sunsmart Products (Pty) Ltd

Sunsmart Products (Pty) Ltd was the proprietor of South African Patent 97/10535 and a registered design relating to a ‘flag construction’ intended to keep advertising flags extended in varying weather conditions using a flexible pole. The patent and design were applied for in 1997 and later assigned to Sunsmart. From 2004, Sunsmart launched proceedings against various parties for alleged infringement. In earlier related litigation (the Flag and Flagpole case), conflicting High Court findings were made on infringement and validity, which were later overturned by the Supreme Court of Appeal. In the present matter, Vari-Deals 101 (Pty) Ltd, Zimstone (Pty) Ltd, and two individuals were alleged to have directly and contributively infringed the patent and design by collaborating in the manufacture and sale of a flag product (the ‘New Heights flag’). Claassen J in the court a quo found infringement of both the patent and design, rejected arguments of invalidity, dismissed a counter-application for revocation, and granted interdictory and ancillary relief, including disclosure of other infringers. The appellants appealed to the Supreme Court of Appeal.

The appeal was dismissed. The orders of the court a quo were upheld, including interdicts against infringement of the patent and design, ancillary relief, and dismissal of the counter-application for revocation.

The case is significant for reaffirming the binding force of Supreme Court of Appeal decisions on patent interpretation and validity, particularly where statutory intellectual property rights apply erga omnes. It confirms the authoritative adoption of the purposive approach to patent claim construction in South African law and clarifies that minor formal differences in shape or configuration will not avoid infringement where the essential elements of an invention are taken. The judgment also illustrates the application of stare decisis in intellectual property litigation involving serial infringers.