Term ended Mar 29, 2024 · High confidence
20-year base term ended Mar 29, 2024
Held by West Technology Group, LLC
Filed Mar 12, 2014 as application 14/205,474 · Granted Jan 6, 2015
Base term, 20 years from filing
Today
Term ended Mar 29, 2024
2004
2026
Clock starts
Mar 29, 2004
Mar 29, 2004
Term ended
Mar 29, 2024
Mar 29, 2024
Granted
Jan 6, 2015
Jan 6, 2015
base term
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
None
Term adjustment
No prosecution delay on this record.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 8,731,168, to Mar 29, 2024. The term already ends on or before that date, so the cap shortened nothing.
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.
5
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. 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 Mar 29, 2004, when application 10/812,854, the earliest non-provisional in its chain, was filed (this one was filed Mar 12, 2014) | Mar 29, 2024 | 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 8,731,168) | resolves to Mar 29, 2024, no earlier than this term, so no change | 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 | Mar 29, 2024 | High confidence |
This family
| US 7,474,634 | In force Nov 2026 | Nov 2026 |
| US 8,731,168 | Term ended Jan 2026 | Jan 2026 |
| US 8,929,530 | this patent Mar 2024 | Mar 2024 |
| US 9,148,517 | Term ended Mar 2024 | Mar 2024 |
| US 9,762,735 | Term ended Mar 2024 | Mar 2024 |
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 |
|---|---|---|---|
| Jun 20, 2014 Reel 33204, frame 215 | West Corporation, As Grantor; West Notifications, As Grantor | Wells Fargo Bank, National Association, as Administrative Agent | Security Interest |
| May 28, 2015 Reel 35783, frame 284 | West Corporation | Wells Fargo Bank, National Association, as Administrative Agent | Patent Security Agreement Supplement |
| Jun 20, 2016 Reel 39093, frame 944 | West Corporation; West Interactive Services Corporation; West Safety Services, Inc.; West Unified Communications Services, Inc.; Reliance Communications, LLC | U.S. Bank National Association | Security Interest |
| Oct 10, 2017 Reel 44166, frame 901 | West Corporation | Credit Suisse AG, Cayman Islands Branch, as Collateral Agent | Notice of Grant of Security Interest in Patents (First Lien) |
| Oct 10, 2017 Reel 44169, frame 9 | Wells Fargo Bank, National Association | West Corporation | Termination and Release of Security Interest in Patents Recorded at Reel 035783, Frame 0284 |
| May 1, 2018 Reel 46046, frame 547 | U.S. Bank National Association | West Corporation; West Interactive Services Corporation; West Safety Services, Inc.; West Unified Communications Services, Inc.; Reliance Communications, LLC | Release of Security Interest |
| May 1, 2018 reel/frame not recorded | U.S. Bank National Association | West Corporation | Release of Security Interest |
| May 1, 2018 reel/frame not recorded | U.S. Bank National Association | West Interactive Services Corporation | Release of Security Interest |
| May 1, 2018 reel/frame not recorded | U.S. Bank National Association | West Safety Services, Inc. | Release of Security Interest |
| May 1, 2018 reel/frame not recorded | U.S. Bank National Association | West Unified Communications Services, Inc. | Release of Security Interest |
| May 1, 2018 reel/frame not recorded | U.S. Bank National Association | Reliance Communications, LLC | Release of Security Interest |
| Dec 20, 2022 Reel 62201, frame 987 | Wells Fargo Bank, National Association | West Corporation; West Notifications, Inc. | Release of Security Interest |
| Dec 20, 2022 reel/frame not recorded | Wells Fargo Bank, National Association | West Corporation | Release of Security Interest |
| Dec 20, 2022 reel/frame not recorded | Wells Fargo Bank, National Association | West Notifications, Inc. | Release of Security Interest |
| Jan 31, 2023 Reel 62571, frame 18 | CX360, Inc.; West Technology Group, LLC (FKA Intrado Corporation, FKA West Corporation); Intrado Interactive Services Corporation (FKA West Interactive Services Corporation, FKA Cobalt Acquisition Company) | U.S. Bank Trust Company, National Association, as Collateral Agent | Notice of Grant of Security Interest (Second Lien) in Patents |
| Apr 3, 2023 Reel 63239, frame 876 | Intrado Corporation | West Technology Group, LLC | Change of Name |
| Apr 3, 2023 Reel 63239, frame 900 | West Corporation | Intrado Corporation | Change of Name |
| Nov 25, 2024 Reel 69438, frame 775 | UBS AG, Stamford Branch (as Successor to Credit Suisse AG, Cayman Islands Branch in Its Capacity as Collateral Agent) | Wilmington Trust, National Association, as the Successor Collateral Agent | Omnibus Assignment of Security Interest in Intellectual Property |
| Jul 14, 2026 Reel 75975, frame 65 | U.S. Bank Trust Company, National Association | Televox, Inc. (FKA Intrado Interactive Services Corporation); West Technology Group, LLC | Notice of Partial Release of Security Interest in Patents |
| Jul 14, 2026 reel/frame not recorded | U.S. Bank Trust Company, National Association | Televox, Inc. (FKA Intrado Interactive Services Corporation) | Notice of Partial Release of Security Interest in Patents |
| Jul 14, 2026 reel/frame not recorded | U.S. Bank Trust Company, National Association | West Technology Group, LLC | Notice of Partial Release of Security Interest in Patents |
| Oct 7, 2026 reel/frame not recorded | Wilmington Trust, National Association | West Corporation | Notice of Partial Release of Security Interest in Patents |
| Oct 7, 2026 reel/frame not recorded | Wilmington Trust, National Association | West Technology Group, LLC | Notice of Partial Release of Security Interest in Patents |
| Oct 7, 2026 Reel 76640, frame 108 | Wilmington Trust, National Association | West Corporation; West Technology Group, LLC | Notice of Partial Release of Security Interest in Patents |
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.
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 8,731,168, ends no earlier than this term, so it caps nothing.
Citations
1
later US patent cites this one
That is below the median of utility patents granted in 2015 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.