Cooking Mama Limited Corp. filed for the trademark with the U.S. Patent and Trademark Office last week, securing rights to use the mark with all manner of video game related things. That includes software, joysticks, screen cleaning cloths being accessories for hand-held games with liquid crystal displays, you name it.
Obviously, Taito and Majesco are pretty happy with sales of Cooking Mama in its various incarnations. That's why we have Gardening Mama. Don't expect interested parties to stop there... but don't give them any ideas.
Crafting Mama [USPTO]