Collateral for a security interest recorded Jan 7, 2019 (Allison Transmission, Inc.).
Term ends no later than Jan 8, 2029 · Low confidence
20-year base term ends May 30, 2028
In force on USPTO's status record and by its fee record. A terminal disclaimer on file may shorten this term, possibly to a date already past; its reference document is unresolved, so the date above is an upper bound and no earlier date is guessed.
Held by Power Technology Holdings LLC
Filed Feb 22, 2010 as application 12/710,247 · Granted Apr 2, 2013
Base term plus 223 days of patent term adjustment (USPTO delay)
Today
2008
2029
Clock starts
May 30, 2008
May 30, 2008
Ends no later than
Jan 8, 2029
Jan 8, 2029
Granted
Apr 2, 2013
Apr 2, 2013
base term
patent term adjustment
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
223
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Unresolved
Terminal disclaimer
On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.
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.
17
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 223 days past its 20-year base term on prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. All three maintenance fees are recorded paid; no more fees are due. Confidence: Low. 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 30, 2008, when the earliest non-provisional application in its chain was filed (this one was filed Feb 22, 2010); a parent in its chain could not be resolved (the next row) | May 30, 2028 | High confidence |
| Continuity chain | A parent in the chain could not be resolved | dated from this application's own claim | Medium confidence |
| Patent term adjustment | +223 days, USPTO patent term adjustment record | Jan 8, 2029 | High confidence |
| Terminal disclaimer cap | Disclaimer on file (approved), reference document not resolved | no cap applied, and none guessed | Medium confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | no later than Jan 8, 2029 | Low confidence |
This family
| US 7,928,148 | In force Nov 2027 | Nov 2027 |
| US 8,978,798 | In force Mar 2031 | Mar 2031 |
| Application 12/130,088 | Abandoned not computed | not computed |
| US 8,153,847 | In force May 2030 | May 2030 |
| US 8,818,588 | In force Jan 2030 | Jan 2030 |
| Application PCT/US2008/008442 | PCT application no patent term | no patent term |
| Application PCT/US2009/066151 | PCT application no patent term | no patent term |
| US 8,408,341 | this patent no later than Jan 2029 | no later than Jan 2029 |
8 of 17 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 |
|---|---|---|---|
| May 14, 2010 Reel 24389, frame 378 | Dalum, Joseph Thomas; Jarmuz, Matthew J.; Myers, Daniel Francis; Ambrosio, Joseph Mario | Odyne Systems, LLC | Assignment of Assignor's Interest |
| Feb 23, 2016 Reel 37805, frame 66 | Odyne Systems LLC | Power Technology Holdings LLC | Assignment of Assignor's Interest |
| Jan 7, 2019 Reel 47920, frame 546 | Odyne Systems, LLC | Allison Transmission, Inc. | Security Interest |
| Jan 7, 2019 Reel 47920, frame 678 | Power Technology Holdings, LLC | Allison Transmission, Inc. | 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
Jan 2029
Term ends no later than Jan 8, 2029. No further fees fall due before then
Note
A terminal disclaimer is on file and its reference is not resolved. No cap is applied and none is guessed
Note
The 223 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Open question
A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than Jan 8, 2029. We will not guess the cap.
Citations
143
later US patents cite this one
That is top 5% of utility patents granted in 2013 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
This computed term ends no later than the date shown; an unresolved terminal disclaimer may end it earlier. 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.