Term ends Nov 21, 2026 · High confidence
20-year base term ended Jan 18, 2025
Held by Affymetrix, Inc.
Filed Jul 13, 2006 as application 11/457,452 · Granted Feb 1, 2011
Base term plus 672 days of patent term adjustment (USPTO delay)
Today
2005
2026
Clock starts
Jan 18, 2005
Jan 18, 2005
Term ends
Nov 21, 2026
Nov 21, 2026
Granted
Feb 1, 2011
Feb 1, 2011
base term
patent term adjustment
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
672
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
3 of 3
Maintenance fees paid
Three maintenance fees fall due, at 3.5, 7.5 and 11.5 years from grant. This counts the ones the record shows paid.
3
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 672 days past its 20-year base term on prosecution delay. All three maintenance fees are recorded paid; no more fees are due. Confidence: High. 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 Jan 18, 2005, when application 11/038,614, the earliest non-provisional in its chain, was filed (this one was filed Jul 13, 2006) | Jan 18, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +672 days, USPTO patent term adjustment record | Nov 21, 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 | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Nov 21, 2026 | High confidence |
This family
| Application 11/038,614 | Abandoned not computed | not computed |
| US 7,881,875 | this patent Nov 2026 | Nov 2026 |
| Application 13/007,471 | Abandoned not computed | not computed |
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 |
|---|---|---|---|
| Sep 26, 2006 Reel 18307, frame 421 | Webster, Teresa A.; Matsuzaki, Hajime; Di, Xiaojun; Hubbell, Earl A.; Mei, Rui; Cawley, Simon; Marcus, Gregory; Jones, Keith W. | Affymetrix, Inc. | Assignment of Assignor's Interest |
| Jun 27, 2012 Reel 28465, frame 541 | Affymetrix, Inc. | General Electric Capital Corporation, as Agent | Security Agreement |
| Oct 28, 2015 Reel 36988, frame 166 | Affymetrix, Inc. | Bank of America, N.A., as Administrative Agent | Security Interest |
| Nov 13, 2015 Reel 37109, frame 132 | General Electric Capital Corporation, as Agent | Affymetrix, Inc. | Release of Security Interest |
| Apr 5, 2016 Reel 38361, frame 891 | Bank Of America, N.a. | Affymetrix, Inc. | Notice of Release |
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.
What's changing
Nov 2026
Term ends Nov 21, 2026. No further fees fall due before then
Note
The 672 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
2
later US patents cite this one
That is below the median of utility patents granted in 2011 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.
In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.