General Information by Subject - C

A B C D E F G H I J L M N O P R S T U

-C-

Subject Telephone Fax TTY
Cancellations, Trademarks 571-272-8500
Registration (Trademark Trial and Appeal Board) 571-272-5600 571-273-0110
CD and DVD-ROM Products
Central Reexamination Unit 571-272-7705 571-273-9900
Certificates of Correction, Patents 703-756-1814 571-273-8300
Certificates of Correction, Trademarks 571-272-9500
Certification Services 800-972-6382
571-272-3150
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
Pending Trademark Applications
See Appropriate Trademark Law Office
Checker Software Program Support
See Patent Electronic Business Center
Chemical Examining Groups
See Patent Technology Centers

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Subject Telephone Fax TTY
Classification Definitions, Patents 703-756-1847
Classification, International Patent Classification System (IPC) 703-756-1847
Classification of Goods and Services, Trademarks
General Information 800-786-9199
571-272-9250
Specific Application
See Appropriate Trademark Law Office
Classification Operations 703-756-1833 703-756-1629
Chemical Classification Unit
(Technology Centers 1600)
Chemical Classification Unit
(Technology Centers 1700)
703-756-1841
Electrical Classification Unit
(Technology Center 2100, 2600, 2800)
703-756-1841
Electrical Classification Unit
(Technology Center 3600)
703-756-1837
Mechanical Classification Unit
(Technology Center 3700)
703-756-1846
Mechanical Classification Unit
(Technology Center 2900)
703-756-1843
Classification Support 703-756-1833 703-756-1629
Data Control Division 703-756-1833 703-756-1629
Editorial Division 703-756-1847 703-756-1626
Classification, US Patent Classification System (USPC) 703-756-1847
Complaints Regarding Invention Promotion Firms 866-767-3848
Concurrent Use Proceedings, Trademarks 571-272-8500
Congressional Liaison
See Administrator for Policy and External Affairs, Office of the
Copies
Advance Orders of Patent Soft Copies, Non-Receipt 888-786-0101
571-272-4200
571-273-8300
Copies of Patent and Trademark Office Documents
(Certified or Uncertified)
571-272-3150 571-273-3250
Foreign Patents 571-272-3547 571-273-0225
Subclass Subscriptions, Patent
(copies of every patent issued every Tuesday for a
particular subclass)
888-786-0101
571-272-4200
571-273-8300
Title Records (for applications and registrations) 571-272-3150 571-273-3250
Copyright Information - United States Copyright Office 202-707-3000

202-707-6737

Copyright Office Forms and Publications Hot Line 202-707-9100
Copyright Office Fax-on-Demand 202-707-2600
Correction of Applications for Patent 571-272-4200
Correction, Patents
See Certificates of Corrections, Patents
Correction, Trademarks
See Certificates of Corrections, Trademarks
Customer Number, Electronic Business Center 866-217-9197
571-272-4100
571-273-0048
Customer Window for Certain Patent-Related Correspondence
Location: Randolph Building
401 Dulany St.
Alexandria, VA 22314
Hours: 8:30 a.m. to 12 midnight, Monday to Friday
(except Federal holidays)

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