The term ''counterfeit substance'' means a controlled substance which, or the container or labeling of which, without authorization, bears the trademark, trade name, or other identifying mark, imprint, number, or device, or any likeness thereof, of a manufacturer, distributor, or dispenser other than the person or persons who in fact manufactured, distributed, or dispensed such substance and which thereby falsely purports or is  represented to be the product of, or to have been distributed by, such other manufacturer, distributor, or dispenser.

California law on "imitation controlled substances"