Term ends Nov 26, 2027 · High confidence
20-year base term ends Nov 26, 2027
Held by Alcon Inc.
Filed Sep 20, 2010 as application 12/740,753 · Granted Dec 31, 2013
Base term plus 275 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
2007
2027
Clock starts
Nov 26, 2007
Nov 26, 2007
Term ends
Nov 26, 2027
Nov 26, 2027
Granted
Dec 31, 2013
Dec 31, 2013
base term
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
275
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 7,594,729.
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.
4
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 275 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 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 Nov 26, 2007, when application 11/945,028, the earliest non-provisional in its chain, was filed (this one was filed Sep 20, 2010) | Nov 26, 2027 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +275 days, USPTO patent term adjustment record | Aug 27, 2028 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 7,594,729) | capped to Nov 26, 2027 | 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 26, 2027 | High confidence |
This family
| US 7,594,729 | In force Nov 2027 | Nov 2027 |
| US 8,619,405 | this patent Nov 2027 | Nov 2027 |
| US 9,295,381 | In force Nov 2027 | Nov 2027 |
3 of 4 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 |
|---|---|---|---|
| Sep 20, 2010 Reel 25011, frame 530 | Van Heugten, Anthony Y. | WF Systems LLC | Assignment of Assignor's Interest |
| Nov 10, 2010 Reel 25342, frame 404 | WF Systems, LLC | Wavetec Vision Systems, Inc. | Assignment of Assignor's Interest |
| Feb 9, 2017 Reel 41671, frame 59 | Wavetec Vision Systems, Inc. | Alcon Research, Ltd. | Merger |
| Feb 9, 2017 Reel 41671, frame 398 | Alcon Research, Ltd. | Novartis AG | Assignment of Assignor's Interest |
| 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
Nov 2027
Term ends Nov 26, 2027. No further fees fall due before then
Note
The 275 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 7,594,729.
Citations
31
later US patents cite this one
That is top 25% of utility patents granted in 2013 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.