Sunsmart Products (Pty) Ltd v Flag & Flagpole Industries (Pty) Ltd t/a National Flags

Sunsmart Products (Pty) Ltd was the proprietor of South African patent 97/10535 relating to a flag construction using a flexible, tapered pole bent into a U-shape to maintain a flag under tension, as well as the registered aesthetic design A97/1155 applied to flags. Sunsmart instituted proceedings against Flag & Flagpole Industries (Pty) Ltd alleging infringement of both the patent and the registered design. The matters were heard together in the Court of the Commissioner of Patents and the Pretoria High Court. The court a quo dismissed both actions, finding no patent infringement and holding that the registered design lacked novelty. Sunsmart appealed to the Supreme Court of Appeal.

The appeal was upheld with costs. The orders of the court a quo were set aside and replaced with orders granting interdicts restraining the respondent from infringing patent 97/10535 and registered design A97/1155, together with ancillary relief agreed upon by the parties.

The case is significant for South African patent and design law as it reaffirms purposive construction of patent claims, clarifies the test for infringement by essential integers, and distinguishes novelty from obviousness. It also provides important guidance on assessing novelty of aesthetic designs, particularly the insufficiency of two-dimensional representations to anticipate a three-dimensional registered design.