Collateral for a security interest recorded Jan 28, 2019 (Midcap Financial Trust).
Term ends Jun 20, 2035 · High confidence
20-year base term ends Oct 4, 2032
Held by Sight Sciences, Inc.
Filed Oct 4, 2012 as application 13/644,769 · Granted Jan 2, 2018
Base term plus 989 days of patent term adjustment (USPTO delay)
Today
2012
2035
Clock starts
Oct 4, 2012
Oct 4, 2012
Term ends
Jun 20, 2035
Jun 20, 2035
Granted
Jan 2, 2018
Jan 2, 2018
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
989
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
2 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.
8
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 989 days past its 20-year base term on prosecution delay. 2 of 3 maintenance fees are paid so far. 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 Oct 4, 2012, when this application, 13/644,769, was filed | Oct 4, 2032 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +989 days, USPTO patent term adjustment record | Jun 20, 2035 | 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 | 2 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Jun 20, 2035 | High confidence |
This family
| US 9,855,167 | this patent Jun 2035 | Jun 2035 |
| US 10,888,453 | In force Oct 2032 | Oct 2032 |
| Application 17/121,455 | Abandoned not computed | not computed |
| US 11,344,447 | In force Oct 2032 | Oct 2032 |
| US 11,471,324 | In force Oct 2032 | Oct 2032 |
| US 11,951,037 | In force Oct 2032 | Oct 2032 |
| US 12,127,974 | In force Oct 2032 | Oct 2032 |
| Application 18/892,271 | Pending not computed | not computed |
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 |
|---|---|---|---|
| Dec 7, 2012 Reel 29430, frame 280 | Badawi, David Y.; O'keeffe, Daniel; Badawi, Paul | Sight Sciences, Inc. | Assignment of Assignor's Interest |
| Jan 28, 2019 Reel 48149, frame 209 | Sight Sciences, Inc. | Midcap Financial Trust, As Agent | Security Agreement (TERM Loan) |
| Jan 28, 2019 Reel 49670, frame 542 | Sight Sciences, Inc. | Midcap Financial Trust, As Agent | Security Agreement (Revolving Loan) |
| Nov 25, 2020 Reel 54524, frame 8 | Sight Sciences, Inc. | Midcap Funding IV Trust, as Agent | Reaffirmed and Amended Security Interest (REVOLVING) |
| Nov 25, 2020 Reel 54524, frame 20 | Sight Sciences, Inc. | Midcap Financial Trust, As Agent | Reaffirmed and Amended Security Interest (TERM) |
| Jul 24, 2023 Reel 64354, frame 155 | Midcap Funding IV Trust | Sight Sciences, Inc. | Release of Security Interest |
| Jan 23, 2024 Reel 66364, frame 162 | Sight Sciences, Inc. | Hercules Capital, Inc., as Agent | Security 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Jun 2035
Term ends Jun 20, 2035. Maintenance fees still fall due before then
Note
The 989 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
102
later US patents cite this one
That is top 5% of utility patents granted in 2018 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.