Collateral for a security interest recorded Aug 28, 2024 (Midcap Funding IV Trust).
Term ends Dec 13, 2040 · Low confidence
20-year base term ends Nov 30, 2040
Held by Aspen Aerogels, Inc.
Filed Jul 7, 2022 as application 17/791,519 · Granted Aug 26, 2025
Base term plus 182 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
2020
2040
Clock starts
Nov 30, 2020
Nov 30, 2020
Term ends
Dec 13, 2040
Dec 13, 2040
Granted
Aug 26, 2025
Aug 26, 2025
base term
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
182
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 11,702,346.
0 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.
10
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 182 days past its 20-year base term on prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 0 of 3 maintenance fees are 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 Nov 30, 2020, when applications 17/106,763 and 17/106,940, the earliest non-provisional applications in its chain, were filed (this one was filed Jul 7, 2022); a parent in its chain could not be resolved (the next row) | Nov 30, 2040 | 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 | +182 days, USPTO patent term adjustment record | May 31, 2041 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 11,702,346) | capped to Dec 13, 2040 | Medium confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 0 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Dec 13, 2040 | Low confidence |
This family
| Application 62/942,495 | Provisional application no patent term | no patent term |
| US 12,355,050 | In force Jan 2043 | Jan 2043 |
| US 11,702,346 | In force no later than Dec 2040 | no later than Dec 2040 |
| Application PCT/US2020/062622 | PCT application no patent term | no patent term |
| Application PCT/US2020/062618 | PCT application no patent term | no patent term |
| Application PCT/US2021/012559 | PCT application no patent term | no patent term |
| US 12,401,077 | this patent Dec 2040 | Dec 2040 |
| Application 18/195,367 | Pending not computed | not computed |
8 of 10 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 8, 2023 Reel 62628, frame 66 | Evans, Owen; Gould, George; Dekrafft, Kathryn; Mihalcik, David; Baur, David E. | Aspen Aerogels, Inc. | Assignment of Assignor's Interest |
| Aug 28, 2024 Reel 68792, frame 245 | Aspen Aerogels, Inc.; Aspen Aerogels Rhode Island, LLC | Midcap Funding IV Trust | 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
Dec 2040
Term ends Dec 13, 2040. Maintenance fees still fall due before then
Note
The 182 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 11,702,346.
Citations
5
later US patents cite this one
Fewer than half of the utility patents granted in 2025 in our data have been cited yet, so we show the count and do not rank on it.
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.