IANAL, but yeah, under the imputation doctrine, the company is usually responsible for the actions of its employees. There is a small exception, but it generally only applies when the employee goes fully rogue, harming the company itself in the process, but here it seems to be a mistake, so not applicable, AFAIUI.

Still, that doesn't mean they can be bound by a license granted by an unauthorized employee. I think at most they would have to pay damages, if any.