The answers to your questions are as follows: (1) A trademark applied for registration must have constituent elements; (2) The trademark applied for registration should be significant; (3) A trademark applying for registration shall not use any sign prohibited by law; (4) The trademark applied for registration shall not be the same as or similar to the trademark registered or preliminarily approved by others on the same or similar goods or services; (5) The trademark applied for registration shall not be the same as or similar to the registered trademark that has been revoked or cancelled for less than one year. 1. To apply for trademark registration for the first time, the applicant shall submit the application form, trademark pattern and supporting documents and pay the application fee. The applicant shall attach a copy of the license issued by the administrative department of health for pharmaceutical production enterprises or the license for pharmaceutical trading enterprises to register the trademark of tobacco products, and the certificate of approval of production by the state tobacco authorities shall be attached. 2. In the process of using a registered trademark, it is necessary to expand the scope of use, regardless of whether the expanded goods belong to the same category as the goods used by the original registered trademark, a separate application for registration must be filed; Where a registered trademark needs to change its logo, it shall re-apply for registration; Where a registered trademark needs to change the name, address or other registered items of the registrant, an application for change shall be filed. 3. Under the principle of prior application, it is of great significance to determine the application date. The date of application is generally based on the date when the Trademark Office receives the application documents. Where the applicant enjoys priority, the priority date shall be the filing date. The Trademark Law stipulates that there are two situations in which priority can be enjoyed: (1) If an applicant for trademark registration applies for trademark registration of the same commodity and the same trademark in China within six months from the date when his trademark was first applied for in a foreign country, he can 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; (2) Where a trademark is used for the first time on an article exhibited at an international exhibition sponsored or recognized by the China Municipal Government, the applicant for registration of the trademark may enjoy priority within 6 months from the date when the article is exhibited. 1. It is very important to choose a reliable intellectual property agency; 2, trademark registration inquiry is essential; 3. When choosing the trademark classification, you should first choose the one that is used now, then choose the one that will be used later, and finally protect your trademark as much as possible when your ability allows. This choice should be based on your own evidence of use later, otherwise it will be revoked and invalid! 4. Pay attention to the relevant time schedule; 5. After obtaining the registration certificate, you should scan and archive it first, and if necessary, it is best to save it in plastic packaging; 6. Remember to extend the trademark due.