Collateral for a security interest recorded Jul 31, 2022 (Newlight Capital LLC).
Term ends Jul 15, 2029 · High confidence
20-year base term ends May 30, 2028
Held by Conxtech, Inc.
Filed May 30, 2008 as application 12/156,252 · Granted May 17, 2011
Base term plus 411 days of patent term adjustment (USPTO delay)
Today
2008
2029
Clock starts
May 30, 2008
May 30, 2008
Term ends
Jul 15, 2029
Jul 15, 2029
Granted
May 17, 2011
May 17, 2011
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
411
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 411 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 30, 2008, when this application, 12/156,252, was filed | May 30, 2028 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +411 days, USPTO patent term adjustment record | Jul 15, 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 | Jul 15, 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 |
|---|---|---|---|
| May 30, 2008 Reel 21088, frame 342 | Simmons, Robert J. | Conxtech, Inc. | Assignment of Assignor's Interest |
| Mar 28, 2011 Reel 26035, frame 257 | Conxtech, Inc. | James D. Warren, as Trustee of the Matilda Trust, as Collateral Agent | Security Agreement |
| Sep 11, 2013 Reel 31186, frame 965 | James D. Warren, as Trustee of the Matilda Trust, as Collateral Agent | Conxtech, Inc. | Release of Security Interest |
| Jan 8, 2019 Reel 47935, frame 187 | Conxtech, Inc.; Smrsf LLC; Conxtech Construction, Inc. | Avidbank | Security Interest |
| Jan 7, 2020 reel/frame not recorded | Avidbank | Conxtech, Inc. | Release of Security Interest |
| Jan 7, 2020 reel/frame not recorded | Avidbank | Conxtech Construction Inc. | Release of Security Interest |
| Jan 7, 2020 reel/frame not recorded | Avidbank | Smrsf, LLC | Release of Security Interest |
| Jan 7, 2020 Reel 51439, frame 336 | Avidbank | Conxtech, Inc.; Conxtech Construction Inc.; Smrsf, LLC | Release of Security Interest |
| Jul 31, 2022 Reel 61033, frame 1 | Conxtech, Inc.; Conxtech Construction, Inc. | Newlight Capital LLC | Security Interest |
| Nov 10, 2023 Reel 65535, frame 423 | Conxtech, Inc.; Conxtech Construction Inc. | Gallagher IP Solutions LLC | 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
Jul 2029
Term ends Jul 15, 2029. No further fees fall due before then
Note
The 411 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
92
later US patents cite this one
That is top 10% of utility patents granted in 2011 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.