Term ends Jun 28, 2028 · High confidence

Computed 20-year base term

Held by Alcon Inc.

Filed Nov 20, 2006 as application 11/561,718 · Granted Jul 20, 2010

Base term plus 586 days of patent term adjustment (USPTO delay)

Today

20 years from filing

Term ends Jun 28, 2028

2006 2028

Clock starts
Nov 20, 2006

Term ends
Jun 28, 2028

Granted
Jul 20, 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

586

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.

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 586 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 Nov 20, 2006, when this application, 11/561,718, was filed	Nov 20, 2026	High confidence
Continuity chain	Every parent in the chain resolved	no change	High confidence
Patent term adjustment	+586 days, USPTO patent term adjustment record	Jun 28, 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 28, 2028	High confidence

This family

US 7,760,411	this patent Jun 2028	Jun 2028
US 8,014,052	In force Nov 2026	Nov 2026

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 7, 2007 Reel 18865, frame 337	Huculak, John C; Horvath, Christopher	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

Jun 2028

Term ends Jun 28, 2028. No further fees fall due before then

Note

The 586 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us

Citations

later US patents cite this one

That is below 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.

System and Method for Illumination Attenuation