General Information by Subject - C
| Subject | Telephone | Fax | TTY |
| 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 |
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| 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 | |
| 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 |
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| Pending Trademark Applications See Appropriate Trademark Law Office |
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| Chemical Examining Groups
See Patent Technology Centers |
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| Subject | Telephone | Fax | TTY |
| 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 |
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| 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 | 571-273-0170 | |
| Concurrent Use Proceeding, Trademarks | 571-272-8500 | ||
| Congressional Liaison | 571-272-9300 | 571-273-0085 | |
| Contact Center
See USPTO Contact Center |
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| 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 |
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| Corrections, Trademarks
See Certificates of Correction,Trademarks |
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| 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 |
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| Hours: 8:30 a.m. to 12 midnight (Mon.-Fri.) except Federal holidays |
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| Top ** Back to Index | |||
