I copied the below from another post by someone else on a different thread. So I'm wondering if HZR have filed an international application, and if not, why not ?
An Australian patent provides protection only within Australia. To obtain similar protection in other countries you generally have two choices:
File separate patent applications in each country. If you only intend to file in a few countries, this may be the most cost effective option.
File a single international application under the Patent Cooperation Treaty (PCT) which is administered by the World Intellectual Property Organization (WIPO). This path gives your application automatic effect in 152 countries, including Australia, where your PCT application becomes an application for a standard patent.
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