how to check the trademark approximation? 1. Log in to China Trademark Network and click "Trademark Query" to enter (registration is not required). 2. After entering the system, users can see the main functions: trademark approximate query, trademark comprehensive information query, trademark status information query, error information feedback, and operation guide. 3. Trademark approximate query is the "pre-query" of trademarks usually mentioned, and the query methods are divided into six types: Chinese character query, pinyin query, English query, digital query, graphic query and prefix query. After the user enters the system, he can click "trademark approximate query" to enter the approximate query interface. 4. Enter the approximate query conditions for trademarks 1) International classification number (required): fill in according to the Eighth Edition of the Table for Distinguishing Similar Goods and Services, or click the "Trademark Classification Help" link to assist in filling in; Enter any Arabic numeral between 1 and 45 here, for example, enter 9. Note: Only one international classification number can be filled in here, which is required, otherwise it cannot be queried. 2) Similar group number: enter the similar group number of the goods according to the Eighth Edition of the Similar Goods and Services Classification Table, for example, enter: 91; 98。 Separated by semicolons. Note: This item is optional, and the inquirer may leave it blank if he thinks it is unnecessary. 3) Query Content (required): Enter the content to be queried, for example, enter "555". The query content should be filled in according to the specific query method. For example, after the query content is entered as "555", the "digital query" method must be selected. See the following explanation for the query method. Note: This item is required, otherwise it cannot be queried. 4) Select query method (required): There are six query methods to choose from: Chinese characters, pinyin, English, numbers, prefixes and graphics, and the query algorithm is implemented according to the latest trademark review algorithm. For each query method, there are two query function buttons: Auto Query and Select Query. When clicking "Automatic Query", the system defaults to the algorithm and marks it before the algorithm rules; Select Query is to query according to the algorithm rules selected by the user, so you must select the algorithm rules before clicking Select Query. In the Chinese character query mode, there are seven approximate algorithm rules: pronunciation, complete identity, order change, partial identity, subtraction of Chinese characters, variation of Chinese characters, and addition of Chinese characters at any position. You can select one or several combined queries, and then you must click Select Query. If the Chinese character query method is selected, the query content can only be entered in simplified Chinese characters, otherwise it cannot be queried correctly. In Pinyin query mode, you can choose one or more combinations of "similar pronunciation and English" to query; If the Pinyin query method is selected, only Pinyin can be entered for the query content, otherwise it cannot be queried correctly. For example: tong ren tang, there must be a space in the middle. In English query mode, you can choose one or more combinations of eight ways to query, such as "changing order, reducing letters, changing letters, 2% similar, completely identical, partially identical, with the same pronunciation, and adding letters anywhere"; If the English query method is selected, only three or more English letters or symbols can be entered in the query content, otherwise the query cannot be made correctly. In English query mode, symbols &; And decimal point can be input as query conditions, such as p&; G。 "Automatic query" in English mode does not include "same pronunciation". In the digital query mode, you can choose one or more combinations of four ways to query: "order change, completely identical, partially identical, and changing any number"; If the number query method is selected, only Arabic numerals can be entered in the query content, otherwise the query cannot be made correctly. In the prefix query mode, you can select one or more combinations of "exactly the same, in the same order" to query; If the prefix query method is selected, only one or two English letters can be entered in the query content, otherwise the query cannot be made correctly. Prefix refers to a trademark consisting of one or two graphical English letters, so the input query condition can only be one or two English letters. Three or more English letters, and choose English inquiry method. In the graphic query mode, you can select "Include Query" to query. If assistance is needed, you can select the "Help" text link at the back to open the auxiliary window of graphic element coding, and select the corresponding graphic element coding, or the user can directly input the graphic element coding: for example, enter 7.1.1 as the query criteria; If the graphic query method is selected, the query content can only be entered as Vienna graphic element code, otherwise the query cannot be made. You can enter at most two graphic codes with a semicolon between them. Separate. 5. The difference between automatic query and selective query: automatic query: query is made according to the default query type, and it is marked before the query type. By default, the system searches by all query types, but the automatic query in English does not include "the same pronunciation". Automatic query, the query type option specified by the user will be invalid. Select Query: the system queries according to the query type selected by the user. Please read the above carefully when you encounter such problems. Then I hope the answers provided above can solve your problem.