Footwear firm Emu Australia has defended its use of the word 'Ugg' after Deckers Outdoor filed a trademark infringement suit this week.

Emu said it was "amused" by Deckers' announcement on Tuesday (7 December), in which it said it was "seeking a Court order to stop Emu from using its trademarks".

Emu and Deckers both sell an increasingly popular style of sheepskin winter boot.

US-based Deckers claimed this week that Emu was "intentionally misleading consumers" into thinking they were buying a pair of Deckers' Ugg Australia boots though.

However, Emu has now hit back by saying Ugg is a generic word in Australia, and that there are over 70 registered trademarks in Australia and New Zealand that include the word Ugg.

Emu Australia spokesperson Dave Porter said: "The fact that Ugg Australia has filed a law suit against a company for misleading consumers makes us laugh down here in Australia. What does the word “Australia” convey to consumers as part of the Ugg Australia trademark?"

Deckers has filed the lawsuit in the US District Court in the Central District of California.