You now only need to register for a business name with ASIC once, and it's registered nationally You can't register a business name that is identical or too similar to a business name registered to another Australian business or company.
However, a business name does not give you legal rights to that name.
This may be the state or territory your business name was first registered in.
This identifier doesn't form part of your business name, but is used to allow people to distinguish between identical business names on the public register.
For many businesses, the name is often the most valuable asset.