Term ended Oct 26, 2026 · Medium confidence
20-year base term ended Dec 12, 2025
Why Medium: A parent in the chain could not be resolved.
Held by Agilent Technologies, Inc.
Filed Jan 20, 2016 as application 15/001,632 · Granted Sep 10, 2019
Base term plus 318 days of patent term adjustment (USPTO delay)
Today
Term ended Oct 26, 2026
2005
2026
Clock starts
Dec 12, 2005
Dec 12, 2005
Term ended
Oct 26, 2026
Oct 26, 2026
Granted
Sep 10, 2019
Sep 10, 2019
base term
patent term adjustment
after the term ends
fee events
Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
318
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
1 of 1
Maintenance fees paid
One maintenance fee can end this term early, the one due 3.5 years from grant; the next one's grace period runs past the term end. This counts it if the record shows it paid.
4
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
This patent's term runs 318 days past its 20-year base term on prosecution delay. Confidence: Medium. from the record
How we calculated this date
One row per rule, each showing its own input and what it did to the date. A step we could not verify says so instead of resolving itself.
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Dec 12, 2005, when application 11/299,643, the earliest non-provisional in its chain, was filed (this one was filed Jan 20, 2016); a parent in its chain could not be resolved (the next row) | Dec 12, 2025 | High confidence |
| Continuity chain | A parent in the chain could not be resolved | dated from this application's own claim | Medium confidence |
| Patent term adjustment | +318 days, USPTO patent term adjustment record | Oct 26, 2026 | High confidence |
| Terminal disclaimer cap | None on record | no cap applied | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 1 maintenance fees paid | term ended | High confidence |
| Computed term end | The steps above, in order | Oct 26, 2026 | Medium confidence |
This family
| US 9,518,955 | In force Jan 2029 | Jan 2029 |
| US 10,408,790 | this patent Oct 2026 | Oct 2026 |
| US 9,823,222 | Term ended Dec 2025 | Dec 2025 |
3 of 4 applications in this family shown, earliest filings first. The applications whose file history this site holds. The family may have others.
Assignments
Assignment documents as recorded at the USPTO, oldest first, with the reel and frame each was recorded at. A recorded assignment is a filed document, not a statement of current ownership, and the absence of a later one is not evidence that the last one still stands.
| Recorded | Assignor | Assignee | Conveyance |
|---|---|---|---|
| May 30, 2019 Reel 49317, frame 593 | Advanced Analytical Technologies, Inc. | Agilent Technologies, Inc. | Assignment of Assignor's Interest |
Sources
Google Patents · The patent document at USPTO · Assignment records at USPTO
USPTO account required: This application in Patent Center · USPTO's maintenance fee lookup
Maintenance fee events come from USPTO's own fee records. Its fee lookup asks for the patent number and the application number.
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Alerts on its grants, lapses and transfers.
What's changing
Note
The 318 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
0
later US patents cite this one
That is below the median of utility patents granted in 2019 in our data, the only group it is compared against.
How we rank
Every date shows its work: the base term, any term adjustment or extension, any disclaimer cap, and the maintenance fee record, each with a confidence tier. How this record was built
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.