Recordal of the Trademark Assignment with PTO is mandatory.
The trademark shall be assigned through concluding the relevant Deed of Assignment (DOA) by the parties. The Deed of Assignment of a trademark(s) must be registered with the Patent and Trademark Office. Without such registration, the DOA has no effect and assignment is not recorded in the Trademark Register.
The following documents are required for recordal of assignment:
The regular timeframe of recordal of trademark assignment is 2-4 months.