"Arduino" is a trademark of Arduino team and should not be used for unofficial variants.<SNIP>While unofficial products should not have "Arduino" in their name, it's okay to describe your product in relation to the Arduino project and platform. <SNIP>Okay: * Xxxxxx for Arduino - products that work with official Arduino boards (e.g. shields or kits) * Xxxxxx (Arduino-Compatible) - variations and clones which are software and hardware compatible
Where I come from. This kind of activity, selling clone as original product is called piracy.