EtherDrive is a brand name for storage area network devices based upon the ATA over Ethernet (AoE) protocol. It was registered with the United States Patent and Trademark Office in 2004.[1] The word was invented by Brantley Coile as a portmanteau of the words Ethernet and disk drive. EtherDrive was a trademark by Coraid from 2002 until 2015 when it was purchased by The Brantley Coile Company as part of the purchase of Coraid's software copyrights, trademarks and trade secrets in May 2015.