Disney has filed for trademarks on "Dia de Los Muertos" in a wide variety of goods and services — candy, snacks, cosmetics, toiletries, perfumes, gadgets, jewelry and jewelry boxes, and more. This would be a good time for people to tell the USPTO that there are innumerable products in those categories that already use the term, and that no exclusive association exists (or should exist) between the Disney company and the traditional Mexican holiday. Not even if the next Pixar movie is called "Dia de Los Muertos."
(Thanks, Chryss!)