From cgw.com.au: Non-use of a registered trade mark can lead to its deregistration, as highlighted by the Federal Court case Seven Network (Operations) Limited v 7-Eleven Inc, where the court ruled that redirecting a domain name did not constitute sufficient use to maintain trade mark rights.
A trade mark must be actively used as a badge of origin connecting goods and services to its holder.
Companies should continue to use their trade marks in ways that establish brand identification, marketing, and other visible connections to avoid the risk of deregistration.