The transfer of trademark rights takes effect from the date of announcement by the Trademark Office. Why does the transfer of patent rights take effect from the date of registration by the Patent Office, the date of registration and the date of announcement? A trademark is a brand. Announcing to the public according to law means that the transferee enjoys the exclusive right to use a trademark (the object of trademark right is all citizens), but the exclusive right to use a trademark of the transferor takes effect from the date of registration.

Patents don't need to be announced to the world, or even kept secret. The transfer of patent right is a right transaction between two civil subjects, and this right must be registered by the administrative organ.