The Baltimore Sun reports that Circuit Judge Barry Williams ruled Wednesday that a trial should determine whether state regulators acted improperly when they chose certain companies to award lucrative licenses to grow the drug.
State lawyers had asked the judge to dismiss the case.
Regulators said they awarded the licenses to two lower-ranked firms to broaden the geographic diversity of the growers, as required by state law.
The two higher-ranking firms displaced by that action sued the state.
The judge has not set a trial date.