While there is certainty that Ajay Bhatt of Intel and the USB-IF (USB Implementers Forum, Inc) developed the USB technology, controversy surrounds who first invented the USB flash drive. Both Trek Technologies and Netac Technology hold patent claims to the device in different countries and have brought lawsuits against other companies. However, many consider Dov Moran and the team at M-Systems (since acquired by SanDisk) to be the first. They patented the device in 1998 and in 2000 IBM began selling the 8 MB device in North America under the name, "DiskOnKey." Development for the flash drive as we know it today happened simultaneously in 2000 with Trek technology, IBM and Lexar.