Collateral for a security interest recorded Nov 25, 2020 (Midcap Funding IV Trust).
Term ends May 21, 2027 · Low confidence
20-year base term ended Jun 26, 2026
Held by Sight Sciences, Inc.
Filed May 15, 2019 as application 16/413,466 · Granted Jul 19, 2022
Base term plus 656 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
2006
2027
Clock starts
Jun 26, 2006
Jun 26, 2006
Term ends
May 21, 2027
May 21, 2027
Granted
Jul 19, 2022
Jul 19, 2022
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
656
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 10,314,742, US 7,909,789, US 9,370,443, US 9,486,361.
1 of 1
Maintenance fees paid
One maintenance fee can end this term early, the one due 3.5 years from grant; the next one's grace period runs past the term end. This counts it if the record shows it paid.
12
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 656 days past its 20-year base term on prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 1 of 1 maintenance fees is paid so far. Confidence: Low. 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 Jun 26, 2006, when application 11/475,523, the earliest non-provisional in its chain, was filed (this one was filed May 15, 2019); a parent in its chain could not be resolved (the next row) | Jun 26, 2026 | High confidence |
| Continuity chain | A parent in the chain could not be resolved | dated from this application's own claim | Medium confidence |
| Patent term adjustment | +656 days, USPTO patent term adjustment record | Apr 12, 2028 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 10,314,742, US 7,909,789, US 9,370,443, US 9,486,361) | capped to May 21, 2027 | Medium confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 1 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | May 21, 2027 | Low confidence |
This family
| US 7,909,789 | In force Oct 2029 | Oct 2029 |
| US 8,287,482 | In force Apr 2027 | Apr 2027 |
| US 9,370,443 | In force Nov 2028 | Nov 2028 |
| US 9,486,361 | In force Jan 2028 | Jan 2028 |
| US 10,314,742 | In force no later than May 2027 | no later than May 2027 |
| US 10,398,597 | In force Jan 2027 | Jan 2027 |
| US 11,389,328 | this patent May 2027 | May 2027 |
| US 11,865,041 | In force Jan 2027 | Jan 2027 |
8 of 12 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 |
|---|---|---|---|
| May 15, 2019 Reel 49194, frame 472 | Badawi, David Y.; Badawi, Paul | Sight Sciences, Inc. | Assignment of Assignor's Interest |
| 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) |
| 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
May 2027
Term ends May 21, 2027. No further fees fall due before then
Note
The 656 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 10,314,742, US 7,909,789, US 9,370,443, US 9,486,361.
Citations
35
later US patents cite this one
That is top 5% of utility patents granted in 2022 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.