Orica Mining Services South Africa (Pty) Ltd v Elbroc Mining Products (Pty) Ltd

Orica Mining Services South Africa (Pty) Ltd was the holder of South African Patent No. 2001/10382 for a portable self-supporting drill rig (a roof bolter) used in underground mining to drill and secure mine roofs. Elbroc Mining Products (Pty) Ltd manufactured and sold a drill rig performing the same function. Orica alleged that Elbroc’s rig infringed several claims of its patent. Elbroc admitted that its rig incorporated all the integers of the claims except one, contending that its drill carriage was not located 'between' the two telescopic props as required by the claims, because it was offset from the linear line between them. The Court of the Commissioner of Patents accepted Elbroc’s argument and dismissed Orica’s infringement claim. Orica appealed to the Supreme Court of Appeal.

The appeal was upheld with costs, including the costs of two counsel. The order of the Court of the Commissioner of Patents was set aside and replaced with an order interdicting Elbroc from infringing South African Patent No. 2001/10382 by selling or offering for sale its drill rig in South Africa, and directing Elbroc to pay Orica’s costs.

The case is significant for reaffirming the purposive approach to patent claim interpretation in South African law. It confirms that patent claims must be construed in context and that immaterial or non-essential variations will not avoid infringement where the substance of the invention is taken. The judgment provides authoritative guidance on avoiding overly literal interpretations of patent claims and aligns South African law with established international principles.