hello. Punctuation marks can be used. According to the provisions of the Trademark Law, a trademark can be composed of characters, graphics, letters, numbers, three-dimensional signs and color combinations, as well as the combination of the above elements. Therefore, if there are special symbols in a trademark, it is ok to classify them as graphics, and the Trademark Office also handles them in this way. However, it should be noted that your trademark must be marked with punctuation marks, that is, it must be treated artistically. If you don't do this, the Trademark Office will reject the trademark application because the mark is not marked.