What is double- digit royalty ?
Context:
Researchers on Monday said Avant's vaccine, licensed by Pfizer Inc in April, more than doubled the survival time in patients, with the most common and deadly type of brain tumor in a clinical trial.
Marucci, whose company is guaranteed an undisclosed double- digit royalty on Pfizer's future sales of the product, said the world's largest drugmaker has the money and could have the desire to greatly widen the scope of research on the vaccine.