It's shortened from facsilimile, which is from the Latin "fac simile" as I said. It was always a description, not a brand name. Coca-Cola can prevent other com

It's shortened from facsilimile, which is from the Latin "fac simile" as I said. It was always a description, not a brand name. Coca-Cola can prevent other companies from calling their products "coke" - but there aren't companies out there calling their products "Xerox" or "Kleenex". Their problem is that consumers refer to other products using their brand names, so the fact that Coca-Cola have preserved their trademark is irrelevant if there are people (and there are) who see a bottle of Pepsi and say "I'm going to grab a coke".