In the case of unauthorized use of trademarks, the methods to reduce the risk of infringement mainly include the following aspects: 1. **Avoid using similar trademarks**: Try to avoid using marks that are similar or approximate to registered trademarks, especially on similar goods or services. You can consider using completely different names, logos or designs. 2. **Limit the scope of use**: If you must use a certain trademark, try to limit its scope of use to areas that will not cause confusion with the original trademark, such as different markets or industries. 3. **Indicate the reference**: In some cases, you can indicate the owner information of the trademark when using it, and indicate that the trademark is owned by others to avoid misunderstanding that the trademark is your own brand. 4. **Use descriptive language**: In the promotion of products or services, use descriptive language instead of directly using the trademark, such as saying "products similar to brand X" instead of directly citing the trademark. 5. **Obtain a license or authorization**: The safest way is to try to seek formal authorization or permission from the trademark owner to ensure the legal use of the trademark. 6. **Understand the principle of fair use**: In some countries, the principle of fair use allows the use of trademarks without authorization in certain circumstances, but this is usually limited and requires specific conditions to be met, which requires specific analysis. 7. **Legal consultation**: If you have any doubts, it is recommended to consult an intellectual property lawyer to obtain professional advice to ensure that the measures taken are legal and effectively reduce risks. 8. **Monitoring and evaluation**: Regularly monitor the use of trademarks, evaluate whether there is an infringement risk, and adjust strategies in a timely manner. Through these measures, the risk of infringement by using unauthorized trademarks can be reduced to a certain extent, but the most important thing is still to comply with laws and regulations and ensure legal use.