SAN FRANCISCO — A federal judge will allow defunct solar panel maker Solyndra to move forward with claims that rival Chinese companies hatched a plot to drive the once-promising startup out of business.

Solyndra, which filed for Chapter 11 bankruptcy protection in 2011 after receiving more than $500 million in government-backed loans, alleged that a trio of Chinese companies torpedoed American manufacturers by selling their solar panels in the U.S. at rock-bottom prices. The Chinese firms protested that Solyndra had done little to sketch out the alleged conspiracy. But in a 25-page order issued Wednesday, U.S. District Judge Saundra Brown Armstrong ruled that the allegations passed muster.