Term ends Jul 9, 2035 · High confidence
20-year base term ends May 2, 2033
Held by Flexgen Power Systems, LLC
Filed Apr 22, 2014 as application 14/258,649 · Granted May 14, 2019
Base term plus 798 days of patent term adjustment (USPTO delay)
Today
2013
2035
Clock starts
May 2, 2013
May 2, 2013
Term ends
Jul 9, 2035
Jul 9, 2035
Granted
May 14, 2019
May 14, 2019
base term
patent term adjustment
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
798
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 798 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 May 2, 2013, when application 13/875,603, the earliest non-provisional in its chain, was filed (this one was filed Apr 22, 2014) | May 2, 2033 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +798 days, USPTO patent term adjustment record | Jul 9, 2035 | 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 | Jul 9, 2035 | High confidence |
This family
| US 9,312,699 | In force Jul 2034 | Jul 2034 |
| US 10,289,080 | this patent Jul 2035 | Jul 2035 |
| US 10,615,597 | In force Jul 2033 | Jul 2033 |
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 |
|---|---|---|---|
| Apr 22, 2014 Reel 32729, frame 730 | Taimela, Pasi; Olivo, Tony; Johnson, Robert William, JR. | Earl Energy, LLC | Assignment of Assignor's Interest |
| Aug 3, 2015 Reel 36239, frame 891 | Earl Energy, LLC | Flexgen Power Systems, Inc. | Assignment of Assignor's Interest |
| May 12, 2017 Reel 42356, frame 298 | Flexgen Power Systems, Inc. | Altira Technology Fund VI L.P.; JMRK Investments, LLC; Generation Ventures, LLC | Security Interest |
| May 12, 2017 reel/frame not recorded | Flexgen Power Systems, Inc. | Altira Technology Fund VI L.P. | Security Interest |
| May 12, 2017 reel/frame not recorded | Flexgen Power Systems, Inc. | JMRK Investments, LLC | Security Interest |
| May 12, 2017 reel/frame not recorded | Flexgen Power Systems, Inc. | Generation Ventures, LLC | Security Interest |
| Jun 13, 2018 Reel 46078, frame 9 | Altira Technology Fund VI L.P. | Flexgen Power Systems, Inc. | Release of Security Interest |
| Jun 14, 2018 Reel 46089, frame 831 | Flexgen Power Systems, Inc. | Miller, Jerrold L; Generation Ventures, LLC | Security Interest |
| Jun 14, 2018 reel/frame not recorded | Flexgen Power Systems, Inc. | Miller, Jerrold L | Security Interest |
| Jun 14, 2018 reel/frame not recorded | Flexgen Power Systems, Inc. | Generation Ventures, LLC | Security Interest |
| Jul 2, 2018 Reel 46252, frame 5 | Miller, Jerrold L | Flexgen Power Systems, Inc. | Release of Security Interest |
| Sep 7, 2018 Reel 46817, frame 124 | Flexgen Power Systems, Inc. | JMRK Investments, LLC; Generation Ventures, LLC | Security Interest |
| Sep 7, 2018 reel/frame not recorded | Flexgen Power Systems, Inc. | JMRK Investments, LLC | Security Interest |
| Sep 7, 2018 reel/frame not recorded | Flexgen Power Systems, Inc. | Generation Ventures, LLC | Security Interest |
| Oct 30, 2020 Reel 54227, frame 475 | JMRK Investments, LLC | Flexgen Power Systems, Inc. | Release of Security Interest |
| Dec 3, 2024 Reel 69480, frame 949 | Flexgen Power Systems, LLC | Jpmorgan Chase Bank, N.a. | Patent Security Agreement |
| Feb 13, 2026 Reel 74858, frame 902 | Flexgen Power Systems, Inc. | Flexgen Power Systems, LLC | Change of Name |
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
Jul 2035
Term ends Jul 9, 2035.
Note
The 798 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
4
later US patents cite this one
That is above the median of utility patents granted in 2019 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.