Collateral for a security interest recorded Jun 28, 2019 (Orix Growth Capital, LLC).
Term ends no later than May 29, 2029 · Medium confidence
20-year base term ends May 29, 2029
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 Exagrid Systems, Inc.
Filed Jul 28, 2014 as application 14/444,700 · Granted Dec 29, 2015
Base term, 20 years from filing
Today
2009
2029
Clock starts
May 29, 2009
May 29, 2009
Ends no later than
May 29, 2029
May 29, 2029
Granted
Dec 29, 2015
Dec 29, 2015
base term
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
None
Term adjustment
No prosecution delay on this record.
Unresolved
Terminal disclaimer
On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.
2 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 is its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. 2 of 3 maintenance fees are paid so far. Confidence: Medium. 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 application 12/455,281, the earliest non-provisional in its chain, was filed (this one was filed Jul 28, 2014) | May 29, 2029 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | 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 | 2 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | no later than May 29, 2029 | Medium confidence |
This family
| US 8,412,848 | In force Sep 2030 | Sep 2030 |
| US 8,812,738 | In force May 2029 | May 2029 |
| US 9,223,794 | this patent 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 |
|---|---|---|---|
| Aug 19, 2015 Reel 36363, frame 179 | Therrien, David G., MR.; Thompson, David Andrew, MR. | Exagrid Systems, Inc. | Assignment of Assignor's Interest |
| Aug 19, 2015 Reel 36449, frame 289 | 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
May 2029
Term ends no later than May 29, 2029. Maintenance fees still 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
Open question
A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than May 29, 2029. We will not guess the cap.
Citations
7
later US patents cite this one
That is above the median of utility patents granted in 2015 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.