Yes, an attorney can represent you in front of a trademark examiner. In fact, it is common and often recommended to have legal representation when dealing with the trademark registration process. Trademark attorneys are knowledgeable about the intricacies of trademark law and the procedures followed by trademark offices.
Having an attorney represent you offers several advantages. They can navigate the complexities of the registration process, provide guidance on the registrability of your mark, conduct a comprehensive trademark search, and assist in preparing a strong application. They can also handle correspondence with the trademark examiner, respond to office actions or objections, and present arguments or evidence in support of your mark.