Popcorn sold in supermarkets should not have a trademark, but it should have a shelf life date.

Because the popcorn sold in supermarkets is freshly made in a popcorn machine, there is no trademark registration in advance and there is no need to register a trademark. However, popcorn is made of corn and its shelf life is generally three to five days. After this period of time, the taste will not be good, and eating it may cause diarrhea, which is not good for people's health.

Like the sausages and ice cream sold in supermarkets, there are no trademarks and they are all ready-to-eat.