Lapsed Mar 21, 2021 on the fee record · Medium confidence
20-year base term ends Dec 1, 2026
Why Medium: The disclaimer's references carry disclaimers of their own not yet read (US 8,190,267), so the cap could be lower.
First maintenance fee unpaid; grace period ended.
Held by Doheny Eye Institute
Filed Apr 20, 2012 as application 13/452,300 · Granted Mar 21, 2017
Base term, 20 years from filing
Today
Lapsed Mar 21, 2021
2006
2026
Clock starts
Dec 1, 2006
Dec 1, 2006
No longer in force
Mar 21, 2021
Mar 21, 2021
Granted
Mar 21, 2017
Mar 21, 2017
Term would have run to
Dec 1, 2026
Dec 1, 2026
base term
after the term ends
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
None
Term adjustment
No prosecution delay on this record.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 8,190,267, to Dec 1, 2026. The term already ends on or before that date, so the cap shortened nothing.
0 of 2
Maintenance fees paid
Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. 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 Dec 1, 2026: its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 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 application 11/607,201, the earliest non-provisional in its chain, was filed (this one was filed Apr 20, 2012) | Dec 1, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 8,190,267) | resolves to Dec 1, 2026, no earlier than this term, so no change | Medium confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 0 of 2 maintenance fees paid | lapsed Mar 21, 2021 | High confidence |
| Computed term end | The steps above, in order | Mar 21, 2021 | Medium confidence |
This family
| US 8,180,454 | Lapsed on the fee record 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 | this patent 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 20, 2012 Reel 28083, frame 713 | Humayun, Mark S, M.D.; Weiland, James D, PHD; Horsager, Alan M | Doheny Eye Institute | Assignment of Assignor's Interest |
| Apr 20, 2012 Reel 28083, frame 827 | Greenberg, Robert J, M.D.; Fine, Ione, PHD; Roy, Arup; McMahon, Matthew J, PHD; Zhou, Dao Min; Hines, Amy; Yadav, Sumit; Dai, Rongqing | Second Sight Medical Products, 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.
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 8,190,267, ends no earlier than this term, so it caps nothing.
Citations
3
later US patents cite this one
That is below the median of utility patents granted in 2017 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.