For general information, mailing addresses, Internet addresses, USPTO.gov accounts, how to use the online fee payment management system and contact information for other USPTO services.

For help with issues or concerns relating to new assignments or obtaining information relating to a pending assignment, as well as questions about assignments, liens on patents, and filing assignments recordation forms.

Copies of official U.S. Patent and U.S. Trademark documents are available for sale from the Patent and Trademark Copy Fulfillment Branch.

Located in Alexandria, VA with trained staff to assist the public in person, via email, and by phone with patent and trademark information and historical collections.

Provides patent information and services to the public. Staffed with experienced examiners who answer general questions about patent examining policy and procedures.

Staff are trained to answer questions about the pre- and post-examination processing of patent applications.

The Patent Cooperation Treaty (PCT) is an international agreement among IP offices and intergovernmental authorities regarding the process of international patent applications. Contact the PCT Helpdesk for assistance.

Assists customers with filing and review of electronic patent application submissions via Patent Center.

Provides assistance for patent applications that may appear to be stalled in the patent examination process and can assist with getting applications back on track.

The Pro Se Assistance Center provides outreach and education to applicants who file patent applications without the assistance of a registered patent attorney or agent.