Terumo KK v Boston Scientific Limited

Terumo KK and Boston Scientific Limited were parties to proceedings in the Federal Court of Australia concerning alleged infringement of a patent. Terumo KK, the patent holder, alleged that Boston Scientific Limited had infringed its Australian Patent No 733000 (the patent). The patent related to a medical device, specifically a catheter system for delivering a stent to a body vessel. Boston Scientific Limited denied infringement and sought to have the patent invalidated.

The primary legal issues before the Court were whether Boston Scientific Limited's accused products infringed the claims of the patent, and if so, whether the patent was valid. Specifically, the Court was required to consider the construction of the patent claims and compare them with the features of the accused devices. The validity of the patent was challenged on grounds including lack of novelty and lack of inventive step.

In his judgment, Justice Terry Williams considered the evidence presented by both parties, including expert testimony, regarding the construction of the patent claims and the technical features of the accused devices. The Court applied the principles of claim construction as established in Australian patent law, focusing on the ordinary and natural meaning of the words used in the claims, read in light of the specification and drawings. The Court found that the accused devices did not fall within the scope of the patent claims, and therefore, there was no infringement. Consequently, the Court did not need to determine the validity of the patent.