Those are kept safe by legal agreements compelling secrecy, not letting most people know the secrets and other methods, but, if the secrets got out, the person who leaked it might get in trouble for breaking a legal contract or breaking and entering or whatever, but, the rest of the world would be able to legally sell things made using those recipes, but they probably wouldn't be able to reference the original company directly (ie, Crowns Chicken, now using KFCs original recipe!) ... "11 herbs and spices" is probably a term that's trademarked too, but I'm sure some marketing person would find a creative way to tell everyone.
It's right there in the name, trade SECRETS.
Those are kept safe by legal agreements compelling secrecy, not letting most people know the secrets and other methods, but, if the secrets got out, the person who leaked it might get in trouble for breaking a legal contract or breaking and entering or whatever, but, the rest of the world would be able to legally sell things made using those recipes, but they probably wouldn't be able to reference the original company directly (ie, Crowns Chicken, now using KFCs original recipe!) ... "11 herbs and spices" is probably a term that's trademarked too, but I'm sure some marketing person would find a creative way to tell everyone.