Izzy’s Ice Cream has registered trademarks for The Izzy Scoop® and for the following “trade dress”:
According to their website, they are more than happy to license you so that you can put a small scoop of ice cream on your cone (commercially of course…although you should feel free to try this at home, I would not post a picture of it on facebook lest you get Izzy in a tizzy).
If you don’t think they’re serious, check this out:
The most interesting thing about this registered trademark is that it covers both the product itself and retail services for ice cream. I don’t know if there are any other product configuration trademarks registered as service marks. Very cool (or cold as it were).