legal ground
Article 50 of the Trademark Law of People's Republic of China (PRC)
Where a registered trademark is revoked, declared invalid or not renewed upon expiration, the Trademark Office shall not approve an application for trademark registration identical with or similar to its trademark within one year from the date of revocation, invalidation or cancellation.
Article 24
Where a registered trademark needs to change its logo, it shall re-apply for registration.
Article 25
An applicant for trademark registration who files an application for trademark registration in China for the same commodity with the same trademark within six months from the date when his trademark is first filed in a foreign country may enjoy priority according to the agreement signed between the foreign country and China or the international treaties to which * * * is a party, or according to the principle of mutual recognition of priority.
Where priority is claimed in accordance with the preceding paragraph, a written statement shall be made when filing an application for trademark registration, and a copy of the first application for trademark registration shall be submitted within three months; Failing to submit a written statement or a copy of the trademark registration application documents within the time limit shall be deemed as not claiming priority.