General Information by Subject

Cassis

Certificates of Correction

Change of Address

Classification

Complaints

Copies

Corrections

Subject	Telephone	Fax
Cancellations, Trademarks
Registration (Trademark Trial and Appeal Board)	571-272-8500
Cassis Optical Disc Products Send e-mail to: ipd@uspto.gov	571-272-5600	571-273-0110
CD-ROM and DVD-ROM Products See Products and Services Catalog
Central Reexamination Unit	571-272-7705	571-273-9900
Certificates of Correction, Patents	703-305-8309	703-308-6672
Certificates of Correction, Trademarks	571-272-9500
Certification Services	571-272-3150 800-972-6382	571-273-3250

Subject	Telephone	Fax	TTY
Change of Address
Attorney Roster	571-272-4097
Issued Patents for File Records (Office of Public Records)	571-272-3150
Issued Patents for Maintenance Fee Notification	571-272-6500
Pending Patent Applications See Appropriate Patent Technology Center
Pending Trademark Applications See Appropriate Trademark Law Office
Chemical Examining Groups See Patent Technology Centers

Subject	Telephone	Fax
Classification Definitions, Patents	571-272-7807
Classification, International Patent Classification System (IPC)	571-272-7807
Classification of Goods and Services, Trademarks
General Information	800-786-9199
Specific Application See Appropriate Trademark Law Office
Classification Operations	571-272-7850	571-273-0093
Chemical Classification Unit (Technology Centers 1600)	571-272-7832
Chemical Classification Unit (Technology Centers 1700)	571-272-7819
Electrical Classification Unit (Technology Center 2100, 2600, 2800)	571-272-7819
Electrical Classification Unit (Technology Center 3600)	571-272-7812
Mechanical Classification Unit (Technology Center 3700)	571-272-7809
Mechanical Classification Unit (Technology Center 2900)	571-272-5473
Classification Support, Office of the Director	571-272-3310	571-273-0026
Data Control Division	571-272-3310	571-273-0026
Editorial Division	571-272-7807	571-273-0093
Classification, US Patent Classification System (USPC)	571-272-7807

Subject	Telephone	Fax	TTY
Complaints Regarding Invention Promotion Firms	866-767-3848	703-306-5570
Concurrent Use Proceeding, Trademarks	571-272-8500
Congressional Liaison	571-272-9300	571-273-0085
Contact Center See USPTO Contact Center
Copies
Advance Orders of Patent Soft Copies, Non-Receipt	571-272-4200 888-786-0101	571-273-8300
Copies of Patent and Trademark Office Documents (Certified and Uncertified)	571-272-3150	571-273-3250
Foreign Patents	571-272-3547 800-972-6382	703-305-1010
Internet Order Requests
Subclass Subscriptions, Patent (copies of every patent issued every Tuesday for a particular subclass)	571-272-4200 888-786-0101	571-273-8300
Title Records (for applications and registrations)	571-272-3150	703-305-4372
Copyright Information - United States Copyright Office	202-707-3000		202-707-6737
Copyright Office Forms Hot Line	202-707-9100
Copyright Office Fax-on-Demand (Requires Touch-Tone Telephone)	202-707-2600
Correction of Applications for Patents	571-272-4200
Corrections, Patents See Certificates of Correction, Patents
Corrections, Trademarks See Certificates of Correction, Trademarks
Customer Number, Electronic Business Center	571-272-4100 866-217-9197	571-273-0177
Customer Service Window, for certain Patent-Related Correspondence
Location: Randolph Building (First Floor) 401 Dulany Street Alexandria, VA 22314
Hours: 8:30 a.m. to 12 midnight (Mon.-Fri.) except Federal holidays