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Dextra Asia Co Ltd and Another v Mariwu Industrial Co (S) Pte Ltd and Another Suit [2006] SGHC 7
A patent for a manufacturing process involving cold forging of rebars is valid and inventive where it overcomes known technical limitations and achieves a significant advance in the industry.
Ng Kok Cheng v Chua Say Tiong [2001] SGHC 143
The court held that the patent was valid and infringed, applying a purposive construction to the claims and finding that the defendant's product contained all essential integers of the patent.