Just for your information:
There are basically two possibilities. Either these names are real potential product names or Nintendo just wants to keep them in the bank for a rainy day so no one else can come out with something that sounds suspiciously like the Wii. As Engadget points out, wanting to protect the Zii name hasn’t stopped Creative from producing a line of Zii phones thus far, but with this new trademark on the books there could be a problem brewing between the two companies.
Personally, I can’t imagine a scenario where Nintendo would want to name a product “Oii,” particularly if it’s pronounced “oi.” Such a move would open the doors to a great holiday season launch campaign, however, so if next December you see Nintendo’s new Wii HD system launching with The Vandals’ “Oi to the World!” in its commericals, you heard it predicted here first.