Of note: you can trademark things other than logos as long as they are non-functional parts of the product (i.e. a bike maker couldn't trademark the shape of their gears to screw competitors). So it's totally possible that Fiji might have a trademark on that bottle shape. It would certainly make sense, since that shape is so iconic and so associated with them that if someone else were to put their water in bottles with that shape, it could possibly be mistaken by consumers for Fiji Water.
