Term ends Jun 28, 2028 · High confidence
20-year base term ends Apr 16, 2028
Held by Imris Imaging, Inc.
Filed Oct 15, 2013 as application 14/054,664 · Granted Sep 15, 2015
Base term plus 73 days of patent term adjustment (USPTO delay)
Today
2008
2028
Clock starts
Apr 16, 2008
Apr 16, 2008
Term ends
Jun 28, 2028
Jun 28, 2028
Granted
Sep 15, 2015
Sep 15, 2015
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
73
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
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.
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 73 days past its 20-year base term on 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 Apr 16, 2008, when application PCT/IB2008/003323, the earliest non-provisional in its chain, was filed (this one was filed Oct 15, 2013) | Apr 16, 2028 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +73 days, USPTO patent term adjustment record | Jun 28, 2028 | 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 28, 2028 | High confidence |
This family
| US 8,560,118 | In force (reinstated) Oct 2030 | Oct 2030 |
| US 9,131,986 | this patent Jun 2028 | Jun 2028 |
2 of 3 applications in this family shown, earliest filings first. 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 |
|---|---|---|---|
| Jan 14, 2014 Reel 31959, frame 532 | Fielding, Tim; Newhook, Perry | The Governors of the University of Calgary | Assignment of Assignor's Interest |
| Jan 14, 2014 Reel 31959, frame 671 | Greer, Alexander; Sutherland, Garnette | The Governors of the University of Calgary | Assignment of Assignor's Interest |
| Jan 14, 2014 Reel 31960, frame 192 | The Governors of the University of Calgary | Neuroarm Surgical Ltd. | Assignment of Assignor's Interest |
| Apr 14, 2022 Reel 59715, frame 394 | Deerfield Imaging Holdings, Inc.; Deerfield Imaging, Inc. | Trinity Capital Inc. | Intellectual Property Security Agreement |
| May 3, 2022 Reel 59799, frame 757 | Neuroarm Surgical Limited | Deerfield Imaging, S.À R.L. | Assignment of Assignor's Interest |
| May 23, 2022 Reel 60170, frame 667 | Deerfield Imaging, S.À R.L. | Deerfield Imaging Holdings, Inc. | Notarial Deed and Dissolution |
| Jun 28, 2022 Reel 60330, frame 638 | Deerfield Imaging Holdings, Inc. | Deerfield Imaging, Inc. | Assignment of Assignor's Interest |
| Dec 29, 2023 Reel 66133, frame 544 | Trinity Capital Inc. | Deerfield Imaging, Inc. | Notice of Termination of Security Interest at Reel/Frame No. 059715/0394 |
| Jan 9, 2024 Reel 66062, frame 405 | Deerfield Imaging, Inc. | Alerus Financial, National Association | Security Interest |
| Feb 14, 2025 Reel 70220, frame 111 | Deerfield Imaging, Inc. | Bell Bank | Security Interest |
| Feb 14, 2025 Reel 70221, frame 432 | Deerfield Imaging, Inc. | Farragut SBIC Fund II, LP; Farragut SBIC Fund III, LP | Security Interest |
| Feb 14, 2025 reel/frame not recorded | Deerfield Imaging, Inc. | Farragut SBIC Fund II, LP | Security Interest |
| Feb 14, 2025 reel/frame not recorded | Deerfield Imaging, Inc. | Farragut SBIC Fund III, LP | Security Interest |
| Feb 24, 2025 Reel 70311, frame 68 | Trinity Capital Inc. | Deerfield Imaging, Inc. | Release of Security Interest |
| Mar 18, 2025 Reel 70546, frame 661 | Deerfield Imaging, Inc. | Imris Imaging, Inc. | Change of Name |
| Mar 18, 2025 Reel 70551, frame 146 | Alerus Financial, National Association | Deerfield Imaging, 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
Jun 2028
Term ends Jun 28, 2028. Maintenance fees still fall due before then
Note
The 73 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
283
later US patents cite this one
That is top 1% 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.