The designs Act specifies that certain designs cannot be registered, such as designs for MEDALS, scandalous designs, and designs including the Australian flag.

For designs registered since 2004, the designs Act includes a 'right of repair' provision, allowing spare parts to be used for certain repairs without infringing a registered design right.

The very act of writing a specification forces you to think through the design you thought you had in your head, and helps you see the flaws in it quickly so that you can iterate and try more designs.