Collateral for a security interest recorded Jun 28, 2019 (Orix Growth Capital, LLC).
Term ends Sep 10, 2030 · High confidence
20-year base term ends May 29, 2029
Held by Exagrid Systems, Inc.
Filed May 29, 2009 as application 12/455,281 · Granted Apr 2, 2013
Base term plus 469 days of patent term adjustment (USPTO delay)
Today
2009
2030
Clock starts
May 29, 2009
May 29, 2009
Term ends
Sep 10, 2030
Sep 10, 2030
Granted
Apr 2, 2013
Apr 2, 2013
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
469
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.
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 469 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 29, 2009, when this application, 12/455,281, was filed | May 29, 2029 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +469 days, USPTO patent term adjustment record | Sep 10, 2030 | 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 | Sep 10, 2030 | High confidence |
This family
| US 8,412,848 | this patent Sep 2030 | Sep 2030 |
| US 8,812,738 | In force May 2029 | May 2029 |
| US 9,223,794 | In force no later than May 2029 | no later than May 2029 |
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 |
|---|---|---|---|
| Mar 7, 2013 Reel 29945, frame 904 | Therrien, David G.; Thompson, David Andrew | Exagrid Systems, Inc. | Assignment of Assignor's Interest |
| Oct 1, 2018 Reel 47172, frame 685 | Exagrid Systems, Inc. | Comerica Bank | Security Interest |
| Jun 28, 2019 Reel 49619, frame 342 | Exagrid Systems, Inc. | Orix Growth Capital, LLC | Security Interest |
| Feb 9, 2021 Reel 56399, frame 163 | Exagrid Systems, Inc. | Orix Growth Capital, LLC | Corrective Assignment to Correct the Appl. Nos. 10303656, 10114831, 10073855 and 10067946 by Removing Them for the Patent Nos. Previously Recorded on Reel 049619 Frame 0342. Assignor(S) Hereby Confirms the Security Interests. |
| May 27, 2021 Reel 56372, frame 929 | Exagrid Systems, Inc. | Silicon Valley Bank, As Administrative Agent | Security Interest |
| Jun 3, 2021 Reel 56425, frame 108 | Comerica Bank | Exagrid Systems, Inc. | 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
Sep 2030
Term ends Sep 10, 2030. No further fees fall due before then
Note
The 469 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
188
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
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.