Why is the Sprite formula not kept secret?

"Sprite formula is confidential, because the formula is simple and the company has a patent right. Sprite is a lemonade drink launched by Coca-Cola Company at 196 1 It is the second largest brand of Coca-Cola Company after Coca-Cola Company. Its products are sold to 190 countries, ranking third in the global beverage market. Coca-Cola regards Sprite as the main strategic brand to enter the China market. Its original meaning is monsters and elves, and then it is translated into Sprite by blending into China traditional culture. In Chinese, it means purity and coolness, which reminds people of a piece of flying snow and a pool of clear water in hot summer, and suddenly there is a cool feeling and irresistible temptation. ...