Collateral for a security interest recorded Feb 11, 2022 (Aon IP Advantage Fund LP).
Term ended Dec 1, 2025 · High confidence
20-year base term ended May 19, 2025
Held by Chasm SPV LLC
Filed Sep 30, 2010 as application 12/894,526 · Granted Oct 3, 2017
Base term plus 196 days of patent term adjustment (USPTO delay)
Today
Term ended Dec 1, 2025
2005
2026
Clock starts
May 19, 2005
May 19, 2005
Term ended
Dec 1, 2025
Dec 1, 2025
Granted
Oct 3, 2017
Oct 3, 2017
base term
patent term adjustment
after the term ends
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
196
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 2
Maintenance fees paid
Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. This counts the ones the record shows paid.
2
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 196 days past its 20-year base term on prosecution delay. 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 May 19, 2005, when application 11/132,520, the earliest non-provisional in its chain, was filed (this one was filed Sep 30, 2010) | May 19, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +196 days, USPTO patent term adjustment record | Dec 1, 2025 | 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 2 maintenance fees paid | term ended | High confidence |
| Computed term end | The steps above, in order | Dec 1, 2025 | High confidence |
This family
| US 9,777,167 | In force Dec 2026 | Dec 2026 |
| US 9,777,168 | this patent Dec 2025 | Dec 2025 |
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 30, 2010 Reel 25069, frame 593 | Bielek, Yan; Emery, Philip R | Flexcon Company, Inc. | Assignment of Assignor's Interest |
| Jul 24, 2018 Reel 46440, frame 398 | Flexcon Company, Inc. | Chasm Advanced Materials, Inc. | Assignment of Assignor's Interest |
| Feb 10, 2022 Reel 58985, frame 737 | Chasm Advanced Materials, Inc. | Chasm SPV LLC | Assignment of Assignor's Interest |
| Feb 11, 2022 Reel 58989, frame 959 | Chasm SPV LLC | Aon IP Advantage Fund LP, 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.
What's changing
Note
The 196 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
4
later US patents cite this one
That is below the median of utility patents granted in 2017 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.