First, what is a combined trademark?
A combined trademark is made up of more than one component, such as word mark and logo mark merged into a single design.
Second, what are the disadvantages of combined trademarks?
1, your trademark only applies to the combined image, limiting how you can use the individual components such as word mark or logo mark. You don’t own a trademark on the name or the logo separately.
2, higher probability of rejection. Trademark Office examines every component(such as word mark and logo mark) for a combined trademark. If one component got rejection, this combined trademark got rejection. That’s why we suggest you apply for the word mark and logo mark separately.