Eigen Technology Pty Ltd v CTA Australia Pty Ltd

In the case of Eigen Technology Pty Ltd v CTA Australia Pty Ltd, the dispute involved a patent application, with Eigen Technology being the patentee and CTA Australia Pty Ltd the opponent. The primary issue was whether an amendment to the patent application, specifically concerning the encasement of a projecting portion of an indicator, was in substance disclosed in the original specification. The court had to determine if the amendment introduced new material that was not disclosed in the original specification.

The legal issue at hand was whether the proposed amendment to the patent claim, which introduced a new feature of the casing partially encasing the projecting portion, added material not in substance disclosed in the original specification. The court needed to consider whether there was a real and reasonably clear disclosure of the proposed amendment in the original specification. This required an interpretation of the word "substantially" as used in the patent claim and how it related to the disclosures in the original specification.

The court found that the original specification only expressly disclosed two scenarios: complete encasement and no encasement of the projecting portion. The amendment introduced a third scenario where the casing partially encased the projection, a scenario not explicitly shown in the original specification. The court applied the test of "a real and reasonably clear disclosure" to determine if the amendment was fairly based on the original disclosure. The term "substantially" was interpreted to mean that the encasement need not be read too literally but must be nearly enough for the patentee's purposes, which was not sufficiently clear in the original specification. Consequently, the court concluded that the amendment introduced new material not in substance disclosed in the original specification, and the opposition to the grant of leave to amend should proceed.

As a result, the court ordered that the opposition to the grant of leave to amend the patent specification should proceed, and the patentee's request for dismissal was denied.