Nintendo has lost an appeal disputing ownership of the wiiu.com domain.
The domain will continue to be held by its previous registrant after Nintendo's cybersquatting complaint was denied by the World Intellectual Property Organization.
Nintendo allegedly filed a complaint against the domain's owner in February in an attempt to gain control of the address.
The company may now have to reach a private agreement with the owner if it wishes to acquire the domain.
Nintendo's official Wii U website currently resides at http://www.nintendo.com/wiiu.