Background
Tama Australia Pty Ltd owned Australian Standard Patent No. 2013242847, titled “Hinged Covering for Adhesive Surface.” The patent claimed wrapping material comprising serially connected wrapping units, discrete adhesive areas, removable protective covers and hinges. Although the material could be used for other purposes, the specification described its use in wrapping agricultural bales.
Tama alleged that two versions of “Cotton Module wrap,” known as the First and Second PPS Wraps, infringed claims 1–7. Parterra Australia Pty Ltd imported, offered and sold the wraps in Australia. Cotton Growers Services Pty Ltd obtained them from Parterra as a local distributor and offered and sold them. Parterra denied infringement and cross-claimed that the patent was invalid for lack of inventive step, utility, support, sufficient description and clarity. Tama also applied to correct Figures 2 and 3 of the patent.
The Court’s Holding
Justice Owens held that the PPS Wraps did not infringe claims 1–7. On the Court’s construction of claim 1, the accused products did not satisfy required features concerning the protective cover, including its relationship to the adhesive area and the claimed hinge. Because claims 2–7 depended on claim 1 and raised no separate infringement issue, Tama’s infringement case failed in full.
The Court nevertheless rejected every ground of Parterra’s invalidity cross-claim. The claimed invention was not shown to lack an inventive step or utility, and the specification adequately supported, described and clearly claimed the invention. The Court also allowed Tama’s unopposed amendment application because reversing Figures 2 and 3 merely corrected obvious errors and did not impermissibly broaden or alter the claims. Tama’s application and Parterra’s cross-claim were both dismissed, with costs left for later determination.
Key Takeaways
- Patent validity does not establish infringement: the accused product must embody every essential feature of the properly construed claim.
- The PPS Wraps did not meet the protective-cover and hinge requirements of claim 1, so neither claim 1 nor its dependent claims was infringed.
- Obvious errors in patent drawings may be corrected under section 105 of the Patents Act 1990 (Cth) when the amendments are allowable and discretionary considerations support them.
Why It Matters
The decision illustrates how precise spatial and structural language can determine infringement in mechanical patent disputes. Products performing a broadly similar function may remain outside a patent’s scope when their components do not have the relationships required by the claims.
It also shows that infringement and validity are independent inquiries. Tama lost its enforcement claim even though Parterra failed to invalidate the patent, leaving the amended patent in force while resolving this dispute in the respondents’ favour.