Term ends Apr 14, 2029 · High confidence
20-year base term ended May 9, 2025
Held by Bloom Energy Corporation
Filed May 9, 2005 as application 11/124,817 · Granted Dec 28, 2010
Base term plus 1436 days of patent term adjustment (USPTO delay)
Today
2005
2029
Clock starts
May 9, 2005
May 9, 2005
Term ends
Apr 14, 2029
Apr 14, 2029
Granted
Dec 28, 2010
Dec 28, 2010
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
1,436
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.
This patent's term runs 1436 days past its 20-year base term on prosecution delay. All three maintenance fees are recorded paid; no more fees are due. 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 9, 2005, when this application, 11/124,817, was filed | May 9, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1436 days, USPTO patent term adjustment record | Apr 14, 2029 | 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 | In force | High confidence |
| Computed term end | The steps above, in order | Apr 14, 2029 | High confidence |
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 |
|---|---|---|---|
| Oct 4, 2007 Reel 19923, frame 181 | Bandhauer, Todd M.; Reinke, Michael J.; Valensa, Jeroen | Modine Manufacturing Company | Assignment of Assignor's Interest |
| Nov 20, 2008 Reel 21872, frame 864 | Modine Manufacturing Company | Bloom Energy Corporation | License |
| Sep 30, 2009 Reel 23310, frame 361 | Modine Manufacturing Company | Bloom Energy Corporation | Assignment of Assignor's Interest |
| Dec 15, 2015 Reel 37301, frame 93 | Bloom Energy Corporation | U.S. Bank National Association, as Collateral Agent | Security Interest |
| Nov 29, 2018 Reel 47686, frame 121 | U.S. Bank National Association, as Collateral Agent | Bloom Energy Corporation | 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
Apr 2029
Term ends Apr 14, 2029. No further fees fall due before then
Note
The 1436 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
94
later US patents cite this one
That is top 10% of utility patents granted in 2010 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.