Collateral for a security interest recorded Apr 8, 2025 (Citibank, N.A.).
Term ends Feb 25, 2037 · High confidence
20-year base term ends Feb 23, 2037
Held by Systima Technologies, Inc.
Filed May 27, 2021 as application 17/332,237 · Granted Feb 7, 2023
Base term plus 2 days of patent term adjustment (USPTO delay)
Today
2017
2037
Clock starts
Feb 23, 2017
Feb 23, 2017
Term ends
Feb 25, 2037
Feb 25, 2037
Granted
Feb 7, 2023
Feb 7, 2023
base term
fee events
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
2
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
1 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.
3
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 2 days past its 20-year base term on prosecution delay. 1 of 3 maintenance fees is 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 Feb 23, 2017, when application 15/440,829, the earliest non-provisional in its chain, was filed (this one was filed May 27, 2021) | Feb 23, 2037 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +2 days, USPTO patent term adjustment record | Feb 25, 2037 | 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 | 1 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Feb 25, 2037 | High confidence |
This family
| US 10,501,578 | In force Feb 2037 | Feb 2037 |
| US 11,028,194 | In force Feb 2037 | Feb 2037 |
| US 11,572,351 | this patent Feb 2037 | Feb 2037 |
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 27, 2021 Reel 56373, frame 687 | Hreha, Richard D.; Tong, Tat H. | Cornerstone Research Group, Inc. | Assignment of Assignor's Interest |
| May 27, 2021 Reel 56373, frame 785 | Cornerstone Research Group, Inc. | Jalapeno Holdings, LLC | Assignment of Assignor's Interest |
| Apr 14, 2022 Reel 59595, frame 149 | Jalapeno Holdings, LLC | Cornerstone Research Group, Inc. | Assignment of Assignor's Interest |
| Jun 27, 2022 Reel 60318, frame 876 | Cornerstone Research Group, Incorporated | Systima Technologies, Inc. | Assignment of Assignor's Interest |
| Aug 2, 2022 Reel 60694, frame 679 | Cornerstone Research Group, Incorporated | Systima Technologies, Inc. | Assignment of Assignor's Interest |
| Sep 30, 2022 Reel 61276, frame 116 | Systima Technologies, Inc. | TCW Asset Management Company, LLC, as Administrative Agent | Security Interest |
| May 28, 2024 Reel 67536, frame 743 | Systima Technologies, Inc.; Karman Holdings LLC | TCW Asset Management Company, LLC, as Administrative Agent | Security Interest |
| Apr 8, 2025 Reel 70775, frame 23 | Systima Technologies, Inc. | Citibank, N.A., as Agent | Security Interest |
| Apr 8, 2025 Reel 70767, frame 592 | TCW Asset Management Company, LLC | Systima Technologies, Inc. | Release of Security Interest |
| Apr 8, 2025 reel/frame not recorded | TCW Asset Management Company, LLC | Karman Space & Defense LLC | Release of Security Interest |
| Apr 8, 2025 Reel 70767, frame 760 | TCW Asset Management Company, LLC | Systima Technologies, Inc.; Karman Space & Defense LLC | Release of 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
Feb 2037
Term ends Feb 25, 2037. Maintenance fees still fall due before then
Note
The 2 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
1
later US patent cites this one
That is below the median of utility patents granted in 2023 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.