Dunno but they change it every 5or 6 years, course they change it based on the sponsor.
They are trying to do the same with the FA cup
But people insiste on the prominence of the F.A in the name.
It was called the milk cup i still refer to it by accident as milk cup - when the sponsors were a dairy
company
Its been called many including mik=lk cup, rumbelows cup , littewoods cup, worthington cup, ...mickey mouse cup/.....