Which of the following is NOT a way to contact the Deposit Account Branch?

The correct answer is based on the fact that the Deposit Account Branch primarily operates through more formal modes of communication such as email, phone, and fax. These channels are established to facilitate efficient handling of inquiries and transactions related to deposit accounts used in trademark processes.

While walk-in consultations are generally common in many business contexts, the USPTO operates on a structured appointment basis rather than encouraging ad-hoc visits for inquiries regarding specific account matters. This ensures that resources are managed efficiently, and inquiries can be directed to the appropriate personnel. Therefore, the absence of a walk-in consultation option emphasizes the USPTO's commitment to structured and manageable interactions regarding deposit accounts.