Legal analysis: Trademarks are not case-sensitive, because as long as you register lowercase text or lowercase English, it is impossible for others to register successfully in uppercase English. This will constitute a similar trademark.

Legal basis: "Trademark Law of the People's Republic of China"

Article 8 Any sign that can distinguish the goods of a natural person, legal person or other organization from the goods of others , including words, graphics, letters, numbers, three-dimensional logos, color combinations and sounds, etc., as well as combinations of the above elements, can be applied for registration as trademarks.

Article 9 The trademark applied for registration shall have distinctive features and be easy to identify, and shall not conflict with the legal rights previously obtained by others.

Trademark registrants have the right to indicate "registered trademark" or registered mark.