Term ended Jul 25, 2026 · High confidence
20-year base term ended Apr 5, 2024
Held by Alcon Inc.
Filed Feb 28, 2005 as application 11/067,794 · Granted Oct 12, 2010
Base term plus 1499 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
Term ended Jul 25, 2026
2004
2026
Clock starts
Apr 5, 2004
Apr 5, 2004
Term ended
Jul 25, 2026
Jul 25, 2026
Granted
Oct 12, 2010
Oct 12, 2010
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
1,499
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Capped
Terminal disclaimer
Resolved from the filed document, referencing US 7,297,137.
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.
23
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 1499 days past its 20-year base term on prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. All three maintenance fees were paid, so no fee lapse ended it. 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 Apr 5, 2004, when application 10/818,314, the earliest non-provisional in its chain, was filed (this one was filed Feb 28, 2005) | Apr 5, 2024 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1499 days, USPTO patent term adjustment record | May 13, 2028 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 7,297,137) | capped to Jul 25, 2026 | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 3 of 3 maintenance fees paid | term ended | High confidence |
| Computed term end | The steps above, in order | Jul 25, 2026 | High confidence |
This family
| US 7,297,137 | Term ended Jul 2026 | Jul 2026 |
| US 7,651,490 | In force Apr 2027 | Apr 2027 |
| US 7,811,255 | this patent Jul 2026 | Jul 2026 |
| US 7,645,255 | In force Dec 2027 | Dec 2027 |
| US 7,625,388 | In force Oct 2027 | Oct 2027 |
| Application PCT/US2005/009449 | PCT application no patent term | no patent term |
| Application PCT/US2005/009273 | PCT application no patent term | no patent term |
| Application PCT/US2005/009274 | PCT application no patent term | no patent term |
8 of 23 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 |
|---|---|---|---|
| Feb 28, 2005 Reel 16337, frame 930 | Boukhny, Mikhail; Gordon, Raphael; Morgan, Michael D.; Yadlowsky, Ann | Alcon, Inc. | Assignment of Assignor's Interest |
| May 31, 2011 Reel 26376, frame 76 | Alcon, Inc. | Novartis AG | Merger |
| Dec 10, 2019 Reel 51454, frame 788 | Novartis AG | Alcon Inc. | Confirmatory Deed of Assignment Effective April 8, 2019 |
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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Note
The 1499 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Disclaimer cap
This term is capped by a terminal disclaimer resolved from the filed document, referencing US 7,297,137.
Citations
62
later US patents cite this one
That is top 25% 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.