Patent and Trademark Depository Library Program
Patent Document Type and Number Definitions
Following are examples and breakdowns of the different types of patents and trademarks.
Type | Number | Examples | ||
Utility | 7 digits | 3394738 | ||
Design | D + 6 digits | D277050 | ||
Plant | PP + 5 digits | PP13845 | ||
Defensive Publication | T + 6 digits | T103201 | ||
Statutory Invention Registration (SIR) | H + 7 digits | H0000016 | ||
Certificate of Correction | Original Document Number Format | |||
Reexamination Certificate | B + 7 digits | B14208747 | ||
Reissue Design | RD + 5 digits | RD28854 | ||
Reissue Plant | RP + 5 digits | RP28304 | ||
Reissue Utility | RE + 5 digits | RE29774 | ||
Reexamination Certificate of Reissue | B + RE + 5 digits | BRE28576 | ||
"X" Patents | X + 000 + 4 digits | X0004325 | ||
"X" Patent Reissue | RX + 4digits | RX4325 | ||
Additional Improvements | AI + 4 digits | AI0013 | ||
Trademark Registration | 7 Digits | 0692593 | ||
Trademark Registration(Post-Issuance Document) | 7 digits | 0703255 | ||
Last Modified: December 13, 1996