Impinj, Inc.
29 more in force are now held by other companies
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
94
Ending by 2030
Dec 2026
Next term end
When these terms end
Held patents by the year their term ends
20262027202820292030203120322033203420352036203720382039204020412042204320442045
Fee deadlines
Maintenance fees fall due 3.5, 7.5 and 11.5 years after grant. A missed fee ends a patent at the end of the six month grace period that follows, not on the due date.
- 1 fee due Nov 16, 2026The maintenance fee for Item Identification via RFID Tag Secret (US 11,651,180) comes due Nov 16, 2026. Unpaid by May 17, 2027, it lapses early.
- 7 fees due Dec 4 to 25, 2026 · next Dec 4
- 1 fee due Jan 21, 2027The maintenance fee for Dual-frequency RFID tag with isolated inputs (US 9,087,281) comes due Jan 21, 2027. Unpaid by Jul 21, 2027, it lapses early.
- 5 fees due Feb 6 to 22, 2027 · next Feb 6
- 6 fees due Mar 3 to 22, 2027 · next Mar 3
- 8 fees due Apr 1 to 24, 2027 · next Apr 1
- 3 fees due May 3 to 17, 2027 · next May 3
- 4 fees due Jun 15 to 30, 2027 · next Jun 15
- 1 fee due Jul 28, 2027The maintenance fee for User-Filtered RFID Inventory (US 10,546,162) comes due Jul 28, 2027. Unpaid by Jan 28, 2028, it lapses early.
- 3 fees due Aug 6 to 25, 2027 · next Aug 6
- 1 fee due Sep 24, 2027The maintenance fee for Exit-code-based RFID loss-prevention system (US 10,600,298) comes due Sep 24, 2027. Unpaid by Mar 24, 2028, it lapses early.
- 3 fees due Oct 5 to 19, 2027 · next Oct 5
- 4 fees due Nov 3 to 12, 2027 · next Nov 3
Recent changes
- 1 of the patents on this record was granted since Aug 16, 2026
- 4 terms have ended since Aug 16, 2026
Patents held now
Soonest term end first. Each date below is computed on that patent's own page, which shows the rule, the adjustments and the fee history it was derived from.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 7,391,329 | Performance driven adjustment of RFID waveform shape In force · From the USPTO record | In force | From the USPTO record | |
| US 7,472,835 | RFID system components implementing adjusted backscatter calculations and methods In force · From the USPTO record | In force | From the USPTO record | |
| US 7,501,953 | RFID readers transmitting preambles denoting communication parameters and RFID tags interpreting the same and methods In force · From the USPTO record | In force | From the USPTO record | |
| US 8,350,665 | RFID reader systems detecting pilot tone In force · From the USPTO record | In force | From the USPTO record | |
| US 7,436,308 | Adjusting RFID waveform shape in view of signal from another reader In force · From the USPTO record | In force | From the USPTO record | |
| US 7,394,324 | Method and system to calibrate an oscillator within an RFID circuit utilizing a test signal supplied to the RFID circuit In force · From the USPTO record | In force | From the USPTO record | |
| US 7,417,548 | Adjusting RFID waveform shape in view of signal from an RFID tag In force · From the USPTO record | In force | From the USPTO record | |
| US 7,830,262 | Adjusting communication parameters while inventorying RFID tags In force · From the USPTO record | In force | From the USPTO record | |
| US 8,391,785 | Interference rejection in RFID tags In force · From the USPTO record | In force | From the USPTO record | |
| US 7,432,814 | Reconstructing RFID waveform shape for reuse in individual channel In force · From the USPTO record | In force | From the USPTO record |
Also on record, not counted in the 272: 29 patents in force now held by others · 9 lapsed for an unpaid fee · 116 ended at full term · 1 surrendered on reissue. List them
Sources and methods
Compiled from the USPTO record, grants, published applications and recorded assignments, not yet reviewed by hand.
How this record was built
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.
Published applications
US patent applications published under this name that have not become patents. An application is published about eighteen months after its earliest filing; one that has not been published is in no public record.
2 pending · 4 abandoned · 36 no status recorded