The Trademark Assistance Center (TAC) provides general information about the trademark registration process and responds to inquiries about the status of trademark applications and registrations. The objective of the TAC is to provide trademark customers with accurate and timely information via multiple channels of communications within a real-time environment. They identify recurring problems, conduct root cause analysis, and assess training needs. Follow this link for contact information: http://www.uspto.gov/web/offices/cio/cis/assistancecenters.htm
All U.S. businesses.