& lt article 10: ... where the right to apply for a patent or the patent right is transferred, the parties concerned shall conclude a written contract and register it with the patent administration department of the State Council, which shall make an announcement. The transfer of the right to apply for a patent or the patent right shall take effect from the date of registration.
This is the same as buying a second-hand house. The contract must be signed, but the most important thing is the transfer of ownership. Otherwise, it is not allowed to confront a third party (the third party who comes in good faith is a bit unclear here). Registration in the patent office is equivalent to the "ownership transfer" of this patent right.
If you don't register with the patent office, someone else will want to buy this patent in the future. Once the patentee is A (the original patentee), they will trade and register, then the patent is C, which has nothing to do with you. Even if A doesn't sell it, it can be licensed as a patentee.
Registration refers to the procedure of recording project changes, and the formal fee is 200 pounds. If you entrust an agent, you will have to add an agency fee of several hundred yuan.
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