423. Opposition, appeal and arbitration.

The proprietor of the patent concerned or any other person wishing to oppose an application for the grant of compulsory licences1 may give to the comptroller2 notice of opposition in accordance with the prescribed procedure3. The comptroller must consider the opposition in deciding whether to grant the application4.

Where an order or entry has been made5 in respect of a patent whose proprietor is a WTO proprietor6:


    (1)     the proprietor or any other person may, in accordance with rules, apply to the comptroller to have the order revoked or the entry cancelled on the grounds that the circumstances which led