Chocolate-covered coffee beans from different brands come with different expiration dates. Having said that, the longevity of the coffee beans can vary because of factors such as their original roast date and the manner in which you have stored them. They can stay good for about four weeks up to a full year. If you buy the beans in bulk, they retain their strength for about 6 months. However, if you buy them in re-sealable bags, then they can last up to a year. You can detect that your chocolate-covered coffee beans are getting stale when the chocolate begins to turn white.