It's been a couple months since Nintendo rush-released a statement on its up and coming 3D handheld, and the company's been predictably mum on most of the details. To be honest, we're not even sure what the official name for the thing will be -- although Nintendo 3DS has been the working title (and the one that makes the most sense, if you ask us). Now the kids at Siliconera are reporting a flurry of activity in Japan's trademark database, with Nintendo registering such names as: Nintendo 3DS, N3DS, 3DSPlay (a 3D WiiPlay variant?) and 3DSWare (similar to DSiWare, perhaps). All in all, it seems safe to assume that the device we see at E3 will be dubbed the 3DS, but who knows? This certainly wouldn't be the first time that a trademark has thrown us for a loop.