I think you're mistaken. Pepsi-Cola Company changed their name to PepsiCo to reflect their more diverse product line after their merger with Frito-Lay, not as

I think you're mistaken. Pepsi-Cola Company changed their name to PepsiCo to reflect their more diverse product line after their merger with Frito-Lay, not as a result of any trademark lawsuit. In the United States at least (though I believe this is the case elsewhere as well), "cola" is the generic term, though Pepsi doesn't use it in their packaging much anymore. See for instance RC Cola.