Can I transfer or sign an implementation license agreement before the patent application is authorized?

Yes, you can. Before authorization, the patent application right is transferred, and after the transfer, the patent application right belongs to the transferee.

Theoretically, it is also possible to sign an implementation license agreement, but no one wants to sign it before the patent right is clear. Before the patent is granted, even if the "temporary protection" after disclosure is used, it is impossible to force the infringement suspect to be punished or compensated. So unless the licensee's head is caught in the door or there are other tricks, it is unlikely to happen in practice.

The above is for reference. Thank you.