Also listed on Advanced Automation, an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Jun 6, 2028 · High confidence
20-year base term ends May 15, 2028
Filed May 15, 2008 as application 12/121,404 · Granted Dec 21, 2010
Base term plus 22 days of patent term adjustment (USPTO delay)
Today
2008
2028
Clock starts
May 15, 2008
May 15, 2008
Term ends
Jun 6, 2028
Jun 6, 2028
Granted
Dec 21, 2010
Dec 21, 2010
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
22
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.
This patent's term runs 22 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 May 15, 2008, when this application, 12/121,404, was filed | May 15, 2028 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +22 days, USPTO patent term adjustment record | Jun 6, 2028 | 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 | Jun 6, 2028 | High confidence |
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 |
|---|---|---|---|
| Jul 17, 2008 Reel 21259, frame 874 | Atkinson, Hayden; Gibson, John; Riggs, Paul | Coopervision Manufacturing Limited | Assignment of Assignor's Interest |
| Jul 17, 2008 Reel 21259, frame 878 | Warren, Tim | Coopervision, Inc. | Assignment of Assignor's Interest |
| Jul 22, 2008 Reel 21275, frame 250 | Dover, Ronnie; Williams, Arthur; Cowden, Jennifer; Gunner, Michael | Advanced Automation, Inc. | Assignment of Assignor's Interest |
| Jul 23, 2008 Reel 21277, frame 431 | Advanced Automation, Inc. | Coopervision International Holding Company, LP | Assignment of Assignor's Interest |
| Jul 31, 2008 Reel 21325, frame 703 | Coopervision, Inc. | Coopervision International Holding Company, LP | Assignment of Assignor's Interest |
| Jul 31, 2008 Reel 21325, frame 709 | Coopervision Manufacturing Limited | Coopervision International Holding Company, LP | Assignment of Assignor's Interest |
| Nov 10, 2020 Reel 54370, frame 631 | Coopervision International Holding Company, LP | Coopervision International Limited | 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.
What's changing
Jun 2028
Term ends Jun 6, 2028. No further fees fall due before then
Note
The 22 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
11
later US patents cite this one
That is above the median of utility patents granted in 2010 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.