If we needed proof of how important a name can be in a brand identity, we need look no further than the apparent confusion being sown by the rebranding of Metropolitan Oakland International Airport (OAK) as San Francisco Bay Oakland International Airport.

Approved in May, the airport’s name change is intended to increase passengers’ awareness of where it’s located, but it seems to be causing confusion with San Francisco International Airport (SFO). Meanwhile, a legal battle has kicked off between the two rival hubs (see our guide to iconic brands and our tips for choosing a product name to avoid a similar fate).