Azuko Pty Ltd v Old Digger Pty Ltd [2001] FCA 1079

Azuko Pty Ltd v Old Digger Pty Ltd [2001] FCA 1079

The Court held that Premier tools infringed claim 1 (but not claims 2, 8, 13, 14) of the SDS patent, and claims 1, 4, 5 of the Giehl patent, based on a purposive construction and finding that minor or functionally irrelevant variations did not avoid essential integers. Manufacture of hammers for sale by Giehl prior to filing constituted secret use, not excluded by s 9, and thus the Giehl patent was invalid; the appeal was allowed in part, enjoining only certain claims and ordering costs.

Parties
Appellant: Azuko Pty Ltd; Appellant: Seismic Supply International Pty Ltd; Respondent: Old Digger Pty Ltd (formerly SDS Digger Tools Pty Ltd)
Jurisdiction
Australia
Judgment Date
08 August 2001
Procedural Posture
Appeal / Appellate Judgment From Single Judge of the Federal Court
Outcome
Appeal allowed in part
Legal Topics
Patent Infringement, Interpretation of Claims, Novelty, Prior Art, Revocation, Anticipation, Prior Secret Use
Intellectual Property Patent Law Patent Infringement Interpretation of Claims Novelty Prior Art Revocation Anticipation +1 more

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Parties

Azuko Pty Ltd

Appellant

Seismic Supply International Pty Ltd

Appellant

Old Digger Pty Ltd (formerly SDS Digger Tools Pty Ltd)

Respondent

Procedural Posture

Appeal / Appellate Judgment From Single Judge of the Federal Court

Legal Issues

  1. 1 Did Azuko's tools infringe the claims of the SDS and Giehl patents?
  2. 2 Were essential integers present in the allegedly infringing devices?
  3. 3 Had the patents been anticipated by prior art?

Ratio Decidendi

The Court held that Premier tools infringed claim 1 (but not claims 2, 8, 13, 14) of the SDS patent, and claims 1, 4, 5 of the Giehl patent, based on a purposive construction and finding that minor or functionally irrelevant variations did not avoid essential integers. Manufacture of hammers for sale by Giehl prior to filing constituted secret use, not excluded by s 9, and thus the Giehl patent was invalid; the appeal was allowed in part, enjoining only certain claims and ordering costs.

Court Disposition

Appeal allowed in part

Orders

  • Set aside that part of the orders made at first instance as declared that claims 2, 8, 13 and 14 of the SDS Patent were infringed and enjoined that infringement.
  • Appeal otherwise dismissed.