At its peak, it was valued at US$9 billion ($14b) and had a partnership with Walgreens.
The company's decline began in 2015, when a Wall Street Journal investigation revealed that its machines weren't giving accurate results. By last year, Theranos had been shuttered and Holmes indicted on fraud charges that could carry up to 20 years in prison. The downfall of the once-celebrated start-up and its CEO has been chronicled in a documentary, a podcast and a best-selling book.
In the class-action civil case, filed in US District Court in Phoenix, consumers accuse Holmes, Theranos and Walgreens of perpetuating a "massive fraud." They also allege Theranos and Walgreens medically battered them by taking blood draws under "false pretenses." Holmes, Theranos and Walgreens are fighting the allegations.
The judge has not yet made a ruling on the Cooley lawyers' request to withdraw.