US footwear group Deckers Outdoor has filed a trademark infringement in the US against Emu Australia and Emu (Aus) Pty, relating to Deckers' Ugg Australia brand.

Deckers has filed the suit at the District Court in the Central District of California, and is seeking a court order to stop Emu from using its trademarks.

Angel Martinez, Deckers chairman and CEO, said: "The success of Ugg Australia has created an entire industry of companies that market their wares by deliberately confusing consumers. Emu’s trademark infringement is intentionally misleading consumers into believing they are buying a genuine Ugg Australia product when in fact, they are not."

Emu says on its website that the word 'ugg' and 'ugg boots' are generic terms in Australia describing a pull on sheepskin boot.

Deckers said it has been manufacturing and selling Ugg Australia boots since purchasing the company in 1995. It has since taken branded sales from US$17m to $800m.