If the icon you design is mostly the same as the registered icon of a certain product without the permission of the copyright owner of the original trademark, then this situation has been suspected of infringement. The other party can definitely sue you! The identification method is very simple: since you have designed the icon, you need to send it to the corresponding agency for registration. If the other party finds that the icon is little or even no different from the registered trademarks of certain products during the review, then Your registration will not pass. vice versa!