How trademark dispute? China in accordance with the provisions of the Trademark Law and its implementation rules, China Trademark Office for trademark registration in the review, who meet the requirements of the Trademark Law, the decision to make a preliminary examination and preliminary approval decision was published in the "Trademark Notice" on. Since the date of the announcement, within three months, anyone can make a preliminary examination of a trademark dispute. Where a trademark request for preliminary approval notice objection must apply for trademark opposition request procedures. Whether objection trademark registration was put whether the applicant within the time specified in reply Trademark Office, the Trademark Office will grant registered or not registered to make a determination and notify the parties in writing. Refused to accept the decision of the Trademark Office may be made to the Trademark Review and Adjudication Board review. Mention of trademark opposition must provide the following documents and materials: 1, cover and seal of the applicant's attorney in duplicate. Applicants outside the mainland to apply for a trademark dispute in China, we must entrust trademark agency conducted. 2, the agency produced "Trademark Opposition." 3, objection grounds and evidence.