Lapsed May 15, 2020 on the fee record · Medium confidence
20-year base term ends Dec 1, 2026
Why Medium: A terminal disclaimer is on file (approved) with no resolved reference, so the term may end earlier.
Second maintenance fee unpaid; grace period ended.
Held by Doheny Eye Institute
Filed Dec 1, 2006 as application 11/607,201 · Granted May 15, 2012
Base term, 20 years from filing, plus 482 days of patent term adjustment (USPTO delay)
Today
Lapsed May 15, 2020
2006
2028
Clock starts
Dec 1, 2006
Dec 1, 2006
No longer in force
May 15, 2020
May 15, 2020
Granted
May 15, 2012
May 15, 2012
Term would have run to
Mar 27, 2028
Mar 27, 2028
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
482
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Unresolved
Terminal disclaimer
On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.
1 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.
4
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
Its term would have run to Mar 27, 2028: its 20-year base term plus 482 days of term adjustment for prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. 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 1, 2006, when this application, 11/607,201, was filed | Dec 1, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +482 days, USPTO patent term adjustment record | Mar 27, 2028 | High confidence |
| Terminal disclaimer cap | Disclaimer on file (approved), reference document not resolved | no cap applied, and none guessed | Medium confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 3 maintenance fees paid | lapsed May 15, 2020 | High confidence |
| Computed term end | The steps above, in order | May 15, 2020 | Medium confidence |
This family
| US 8,180,454 | this patent May 2020 | May 2020 |
| Application PCT/US2006/046042 | PCT application no patent term | no patent term |
| US 8,190,267 | In force no later than Dec 2026 | no later than Dec 2026 |
| US 9,597,495 | Lapsed on the fee record Mar 2021 | Mar 2021 |
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 |
|---|---|---|---|
| Apr 16, 2007 Reel 19169, frame 831 | Greenberg, M.D. PH.D., Robert J.; Fine, PH.D., Ione; Roy, Arup; McMahon, PH.D., Matthew J.; Zhou, Dao Min; Hines, Amy; Yadav, Sumit; Dai, Rongqing | Second Sight Medical Products, Inc. | Assignment of Assignor's Interest |
| Oct 12, 2007 Reel 19956, frame 956 | Weiland, PH.D., James David; Horsager, Alan M.; Humayun, M.D., PH.D., Mark H. | Doheny Eye Institute | Assignment of Assignor's Interest |
| Feb 7, 2008 Reel 20488, frame 271 | Weiland, James David; Horsager, Alan M.; Humayun, Mark S. | Doheny Eye Institute | 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
Note
A terminal disclaimer is on file and its reference is not resolved. No cap is applied and none is guessed
Note
The 482 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Open question
A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than May 15, 2020. We will not guess the cap.
Citations
35
later US patents cite this one
That is top 25% of utility patents granted in 2012 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.