Judgment based on the situation you describe. Snowflake's trademark pattern infringement lawsuit may refer to appearance patent infringement. I checked the trademark of Kedel Saixue and found that Saixue only has Chinese characters and no pattern. Therefore, there will be no trademark pattern infringement. Furthermore, even if Saixue has a pattern, if the Trademark Office approves the registration of Saixue trademark, it means that Saixue can be used normally and legally. For appearance patent infringement, the manufacturer should bear responsibility regardless of the quality of its products.