A B C D E F G H I J L M N O P R S T U
-I-
| Subject | Telephone | Fax | TTY |
|---|---|---|---|
| Information Center, Scientific and Technical (STIC) | |||
| Information Contacts Telephone Directory (to request a copy) | 800-786-9199 571-272-1000 | 800-877-8339 | |
| Initial Patent Examination | |||
| Customer Service | 571-272-4000 | 571-273-8300 | |
| Fax Response to Notice to File Missing Parts (drawings may not be submitted by fax) | 571-273-8300 | ||
| Initial Trademark Review | 800-786-9199 571-272-9250 | 571-273-9250 | |
| Innovation Station Child Development Center | 571-272-2880 | ||
| Inspection of Patent Files | 703-756-1800 | ||
| Intent to Use Applications, Trademarks | 571-272-9550 | 571-273-9550 | |
| Interferences | 571-272-9797 | ||
| International Liaison Staff | 703-756-1833 | 571-273-0093 | |
| International Patent Classification (IPC) System | 703-756-1833 | ||
| International Patent (PCT) Application Information | 571-272-4300 | 571-273-0419 | |
| Inventors Assistance Center (IAC) | 800-786-9199 571-272-1000 | 800-877-8339 | |
| Inventors Assistance Program | 866-767-3848 | ||
| Issue Fee See Application Assistance Unit |