> That's why the Pepsi Challenge can name Coca-Cola directly as the product that people prefer. Certainly Coca-Cola would sue them if they had any legal grounds

> That's why the Pepsi Challenge can name Coca-Cola directly as the product that people prefer. Certainly Coca-Cola would sue them if they had any legal grounds to stand on, and they do not. This is literally "nominative use" and is explicitly allowed by US and EU law. You can name your competitor's product. You can compare your product with that of your competitors'. You can't adulterate someone's trademark product and still use the mark to refer to the product.