1. When you see a trademark and want to know whether it has been registered, we can check whether there is an R label next to the trademark, which means that the trademark has been registered.

2. You can check whether a trademark has been registered through some trademark registration websites on the Internet.

3. When inquiring whether a trademark is registered, you need to find a professional organization to handle it.

(II) Inquiring methods and steps for checking whether a trademark has been registered by others online:

1. Browsers search and log on to the China Trademark website of the State Administration for Industry and Commerce. Check the disclaimer, and if it is acceptable, click the I accept button.

2. Click the top function in the new interface. You can inquire whether the same or similar trademarks have been registered.

3. To fill in the international classification number in the first box of the trademark inquiry interface, you should enter Arabic numerals, starting from 1. If you don't know what the classification number is, you can click to view the product classification help. Similar group numbers in the table can be left blank.

4. In the drop-down menu of query method, you can select the query method, such as Chinese characters, pinyin, numbers, graphics, etc. Depending on the choice here, the following options will be different. Select to query Chinese characters.

5. After selecting Chinese characters, there will be many choices below, and you can check them. You need to make appropriate choices according to your actual query requirements.

6. After setting, it is necessary to enter the specific content to be queried.

7. After all the parameters are set correctly and the verification code is filled in, you can click the Auto Query button.

8. Next, the query result page will appear. You can click the View button to view the complete information.