Term ended Feb 11, 2025 · High confidence
20-year base term ended Nov 11, 2022
Held by Invt SPE LLC
Filed Jul 3, 2003 as application 10/250,487 · Granted Dec 2, 2008
Base term plus 823 days of patent term adjustment (USPTO delay)
Today
Term ended Feb 11, 2025
2002
2026
Clock starts
Nov 11, 2002
Nov 11, 2002
Term ended
Feb 11, 2025
Feb 11, 2025
Granted
Dec 2, 2008
Dec 2, 2008
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
823
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
3 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.
204
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 823 days past its 20-year base term on prosecution delay. All three maintenance fees were paid, so no fee lapse ended it. 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 11, 2002, when application PCT/JP2002/011712, the earliest non-provisional in its chain, was filed (this one was filed Jul 3, 2003) | Nov 11, 2022 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +823 days, USPTO patent term adjustment record | Feb 11, 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 | 3 of 3 maintenance fees paid | term ended | High confidence |
| Computed term end | The steps above, in order | Feb 11, 2025 | High confidence |
This family
| US 7,839,759 | Lapsed on the fee record Nov 2018 | Nov 2018 |
| US 7,460,502 | this patent Feb 2025 | Feb 2025 |
| US 7,564,902 | Term ended Oct 2025 | Oct 2025 |
| US 7,610,630 | Lapsed on the fee record Oct 2021 | Oct 2021 |
| US 7,570,626 | Term ended Sep 2024 | Sep 2024 |
| US 7,738,774 | In force Mar 2027 | Mar 2027 |
| US 7,916,770 | Lapsed on the fee record Mar 2019 | Mar 2019 |
| US 7,916,674 | Term ended Aug 2025 | Aug 2025 |
8 of 204 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 |
|---|---|---|---|
| Jul 3, 2003 Reel 14593, frame 452 | Arima, Takenobu; Miya, Kazuyuki | Matsushita Electric Industrial Co., Ltd. | Assignment of Assignor's Interest |
| Nov 21, 2008 Reel 21897, frame 624 | Matsushita Electric Industrial Co., Ltd. | Panasonic Corporation | Change of Name |
| Jan 3, 2014 Reel 31911, frame 911 | Panasonic Corporation | Inventergy, Inc. | Assignment of Assignor's Interest |
| Jan 27, 2014 Reel 32127, frame 234 | Inventergy, Inc. | Beyers, Joseph | Security Agreement |
| Jan 29, 2014 Reel 32136, frame 844 | Inventergy, Inc. | Hudson Bay IP Opportunities Master Fund, LP, as Collateral Agent | Security Agreement |
| Mar 25, 2014 Reel 32513, frame 759 | Beyers, Joseph | Inventergy, Inc. | Release of Security Interest |
| Mar 25, 2014 Reel 32525, frame 81 | Inventergy, Inc. | Hudson Bay IP Opportunities Master Fund, LP, as Collateral Agent for Certain Buyers | Security Interest |
| Oct 1, 2014 Reel 33883, frame 330 | Inventergy, Inc. | DBD Credit Funding LLC | Security Interest |
| Oct 14, 2014 Reel 33987, frame 866 | Hudson Bay IP Opportunities Master Fund, LP | Inventergy, Inc. | Release of Security Interest |
| Nov 3, 2014 Reel 34150, frame 298 | Hudson Bay IP Opportunities Master Fund, LP, for Itself and as Collateral Agent for Certain Buyers | Inventergy, Inc. | Release of Security Interest |
| Jan 4, 2017 Reel 41247, frame 908 | Inventergy Global, Inc.; Inventergy, Inc.; Eon Communication Systems, Inc.; Inventergy Holding, LLC; Inventergy Innovations, LLC; Inventergy Iot, LLC; Inventergy LBS, LLC | DBD Credit Funding LLC, as Collateral Agent | Security Interest |
| Jun 19, 2017 Reel 42885, frame 685 | Inventergy, Inc. | Invt SPE LLC | Assignment of Assignor's 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 823 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
42
later US patents cite this one
That is top 25% of utility patents granted in 2008 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.