Term ends Apr 16, 2028 · High confidence
20-year base term ends Apr 16, 2028
Held by Imris Imaging, Inc.
Filed Oct 8, 2013 as application 14/049,043 · Granted Jun 2, 2015
Base term, 20 years from filing
Today
2008
2028
Clock starts
Apr 16, 2008
Apr 16, 2008
Term ends
Apr 16, 2028
Apr 16, 2028
Granted
Jun 2, 2015
Jun 2, 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.
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. 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/IB2008/003363, the earliest non-provisional in its chain, was filed (this one was filed Oct 8, 2013) | Apr 16, 2028 | 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 | Apr 16, 2028 | High confidence |
This family
| US 8,554,368 | In force (reinstated) Dec 2030 | Dec 2030 |
| US 9,044,257 | this patent Apr 2028 | Apr 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 |
|---|---|---|---|
| Apr 14, 2022 Reel 59715, frame 394 | Deerfield Imaging Holdings, Inc.; Deerfield Imaging, Inc. | Trinity Capital Inc. | Intellectual Property Security Agreement |
| Dec 12, 2022 Reel 62052, frame 548 | Fielding, Tim; Newhook, Perry | MacDonald, Dettwiler and Associates Inc. | Assignment of Assignor's Interest |
| Dec 12, 2022 Reel 62052, frame 673 | MacDonald, Dettwiler and Associates Inc. | The Governors of the University of Calgary | Assignment of Assignor's Interest |
| Dec 12, 2022 Reel 62052, frame 797 | The Governors of the University of Calgary | Neuroarm Surgical Ltd. | Assignment of Assignor's Interest |
| Jan 10, 2023 Reel 62329, frame 803 | Neuroarm Surgical Limited | Deerfield Imaging, S.À R.L. | Assignment of Assignor's Interest |
| Jan 12, 2023 Reel 62351, frame 711 | Deerfield Imaging Holdings, Inc. | Deerfield Imaging, Inc. | Assignment of Assignor's Interest |
| Feb 8, 2023 Reel 62681, frame 290 | Deerfield Imaging, S.À R.L. | Deerfield Imaging Holdings, Inc. | Notarial Deed and Dissolution |
| 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
Apr 2028
Term ends Apr 16, 2028. Maintenance fees still fall due before then
Citations
16
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
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.