How Long Does a Trademark Last? Do Trademarks Expire?

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How long does a trademark last? How long does the entire process take?

So, we talked about patents and how long they last. So, design patents are good for 14 years; utility patents are good for 20 years. This viewer is asking about trademarks. Trademarks can last forever. I mean, you think about some of the well known trademarks, Coca Cola, the brand name, and the trademark is over 100 years old. You do have to renew the trademark initially after five years, and then after that once every 10 years you have to file documentation showing that you're still using it in the market. But trademarks last forever.