Trademarks can contain words, graphics, letters, numbers, three-dimensional signs and color combinations, as well as combinations of these elements. In other words, you can include all these elements in the trademark. However, in the examination of the Trademark Office, it will be compared with registered trademarks. If the Trademark Office thinks it is similar, it will probably reject it. In this way, the more elements in a trademark, the greater the chance of rejection. So separate registration can reduce the risk. Because when the trademark of one element is rejected, the trademarks of other elements can still be used.