Collateral for a security interest recorded Jul 24, 2019 (Royal Bank of Canada).
Term ends Jun 13, 2032 · High confidence
20-year base term ends Jun 13, 2032
Filed Sep 5, 2012 as application 13/582,978 · Granted Jul 21, 2015
Base term, 20 years from filing
Today
2012
2032
Clock starts
Jun 13, 2012
Jun 13, 2012
Term ends
Jun 13, 2032
Jun 13, 2032
Granted
Jul 21, 2015
Jul 21, 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.
None
Terminal disclaimer
No disclaimer on this record.
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.
4
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. 2 of 3 maintenance fees are 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 Jun 13, 2012, when application PCT/US2012/042314, the earliest non-provisional in its chain, was filed (this one was filed Sep 5, 2012) | Jun 13, 2032 | 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 | None on record | no cap applied | High 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 | Jun 13, 2032 | High confidence |
This family
| Application PCT/US2012/042314 | PCT application no patent term | no patent term |
| US 9,084,489 | this patent Jun 2032 | Jun 2032 |
| US D754,991 | In force May 2030 | May 2030 |
| US 10,920,418 | In force Mar 2034 | Mar 2034 |
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 |
|---|---|---|---|
| Sep 11, 2012 Reel 28934, frame 147 | Gosling, Geoff; Smed, Mogens F.; Blehm, Colin V. | Dirtt Environmental Solutions, Ltd. | Assignment of Assignor's Interest |
| Sep 11, 2012 Reel 28934, frame 503 | Dirtt Environmental Solutions, Ltd. | Dirtt Environmental Solutions Inc. | Assignment of Assignor's Interest |
| Sep 11, 2012 Reel 28935, frame 505 | Dirtt Environmental Solutions Inc. | Dirtt Environmental Solutions, Ltd. | Assignment of Assignor's Interest |
| Apr 27, 2015 Reel 35497, frame 716 | Olsen, Gregory Gordon Charles | Dirtt Environmental Solutions, Ltd. | Assignment of Assignor's Interest |
| Jul 24, 2019 Reel 49855, frame 258 | Dirtt Environmental Solutions Ltd. | Royal Bank of Canada | 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
Jun 2032
Term ends Jun 13, 2032. Maintenance fees still fall due before then
Citations
48
later US patents cite this one
That is top 10% 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
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.