Be careful when using logos or elements that are similar to those of a well-known brand in your advertising campaigns to avoid direct trademark infringement. Here are some tips to help you reduce the risk of infringement: 1. **Avoid direct copying**: Try not to directly copy the logo, slogan or other logo elements of well-known brands. Aim for originality and create a unique visual image when designing. 2. **Use general descriptions**: Avoid using the names of specific brands or images that are too similar, and use more general descriptive language to convey information. 3. **Change design elements**: Make significant changes to design elements to ensure that the new design is clearly different from the original brand. You can change the color, shape or font style. 4. **Add original content**: Add unique elements to your ads, such as original illustrations or photography, to increase differentiation from well-known brands. 5. **Follow local laws**: Different industries and regions have different regulations on trademark protection. Make sure you follow local laws and regulations and consult legal professionals when necessary. 6. **Avoid confusion**: Make sure your ads will not confuse consumers into thinking that your products or services are associated with or provided by well-known brands. 7. **Conduct a trademark search**: Conduct a thorough trademark search before designing to confirm that your design will not conflict with existing trademarks. 8. **Consider the principle of "fair use"**: In some cases, the use of elements related to well-known brands may be considered "fair use". Such as for commentary, criticism or comparative advertising, but still need to be cautious to avoid misleading. 9. **Ask for permission**: If possible, consider communicating with the brand and obtaining its permission, especially in the case of co-marketing or joint promotion. 10. **Ask legal counsel for review**: Before posting an advertisement, it is best to ask a legal professional to review it to ensure that there is no potential risk of infringement. Please note that the above suggestions cannot completely eliminate the risk of infringement. The specific situation should still be judged based on actual circumstances and laws and regulations.