Does the patent of the branch company belong to the head office?

Yes, because the branch belongs to the head office and does not enjoy independent legal personality. Therefore, the patent right of the branch belongs to the head office, and the head office can enjoy the intellectual property rights of the branch.

Legal basis:

Article 14 of the Company Law of People's Republic of China (PRC) * * A company may set up branches. The establishment of a branch company shall apply to the company registration authority for registration and obtain a business license. A branch company does not have legal person status, and its civil liability shall be borne by the company. A company may set up subsidiaries, which have legal personality and independently bear civil liabilities according to law.