Collateral for a security interest recorded Oct 27, 2026 (TCW Asset Management Company LLC).
Term ends Nov 4, 2031 · High confidence
20-year base term ends Nov 4, 2031
Held by Ipc Systems, Inc.
Filed Sep 28, 2017 as application 15/718,383 · Granted Jul 21, 2020
Base term, 20 years from filing
Today
2011
2031
Clock starts
Nov 4, 2011
Nov 4, 2011
Term ends
Nov 4, 2031
Nov 4, 2031
Granted
Jul 21, 2020
Jul 21, 2020
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
None
Term adjustment
No prosecution delay on this record.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 9,805,094, to Nov 4, 2031. The term already ends on or before that date, so the cap shortened nothing.
1 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.
4
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 is its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 1 of 2 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 Nov 4, 2011, when application 13/289,798, the earliest non-provisional in its chain, was filed (this one was filed Sep 28, 2017) | Nov 4, 2031 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 9,805,094) | resolves to Nov 4, 2031, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 2 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Nov 4, 2031 | High confidence |
This family
| US 9,805,094 | In force Jun 2033 | Jun 2033 |
| Application PCT/US2012/061276 | PCT application no patent term | no patent term |
| US 10,719,518 | this patent Nov 2031 | Nov 2031 |
| US 11,275,745 | In force Nov 2031 | Nov 2031 |
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 28, 2017 Reel 43727, frame 79 | Miller, Mark Anthony; Calvin, Theodore O.; O'donnell, Matthew John | Ipc Systems, Inc. | Assignment of Assignor's Interest |
| Feb 21, 2018 Reel 44989, frame 250 | Ipc Systems, Inc. | HPS Investment Partners, LLC | Security Interest |
| Mar 12, 2018 Reel 45567, frame 320 | Ipc Systems, Inc. | Barclays Bank PLC, as Collateral Agent | Suppl. No. 2 to Second Lien Security Agreement |
| Apr 26, 2018 Reel 46022, frame 281 | Ipc Systems, Inc. | Midcap Financial Trust, As Collateral Agent | First Lien Patent Security Agreement |
| Apr 30, 2018 Reel 45665, frame 50 | HPS Investment Partners, LLC, as Collateral Agent | Ipc Systems, Inc. | Release of Security Interest |
| Aug 2, 2019 Reel 49945, frame 303 | Ipc Systems, Inc. | Barclays Bank PLC, as Collateral Agent | Supplement 2 to First Lien Patent Security Agreement |
| Aug 2, 2019 Reel 49945, frame 414 | Ipc Systems, Inc. | Barclays Bank PLC, as Collateral Agent | Supplement 2 to Second Lien Patent Security Agreement |
| Jul 20, 2020 Reel 53258, frame 776 | Barclays Bank PLC as the Existing Agent | Cortland Capital Market Services LLC as Successor Agent | Security Interest Assignment |
| Oct 4, 2021 Reel 57691, frame 813 | Barclays Bank PLC | Ipc Systems, Inc. | Release of Security Interest |
| Oct 4, 2021 Reel 57693, frame 276 | Midcap Financial Trust | Ipc Systems, Inc. | Release of Security Interest |
| Oct 4, 2021 Reel 57693, frame 660 | Cortland Capital Market Services LLC | Ipc Systems Inc. | Release of Security Interest |
| Oct 22, 2021 Reel 57884, frame 381 | Ipc Systems, Inc. | HPS Investment Partners, LLC | Security Interest |
| Mar 11, 2026 Reel 75090, frame 164 | Ipc Systems, Inc. | HPS Investment Partners, LLC, as Collateral Agent | First Lien Security Interest |
| Oct 27, 2026 Reel 76521, frame 140 | Ipc Systems, Inc. | TCW Asset Management Company LLC, as Agent | Security Interest |
| Oct 30, 2026 Reel 76579, frame 182 | HPS Investment Partners, LLC, as Collateral Agent | Ipc Systems, Inc. | 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
Nov 2031
Term ends Nov 4, 2031. Maintenance fees still fall due before then
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 9,805,094, ends no earlier than this term, so it caps nothing.
Citations
5
later US patents cite this one
That is above the median of utility patents granted in 2020 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.