Term ends Apr 20, 2031 · High confidence
20-year base term ends Apr 20, 2031
Held by Imris Imaging, Inc.
Filed Sep 13, 2011 as application 13/231,004 · Granted Jul 16, 2013
Base term, 20 years from filing
Today
2011
2031
Clock starts
Apr 20, 2011
Apr 20, 2011
Term ends
Apr 20, 2031
Apr 20, 2031
Granted
Jul 16, 2013
Jul 16, 2013
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.
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.
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. 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 Apr 20, 2011, when application 13/090,816, the earliest non-provisional in its chain, was filed (this one was filed Sep 13, 2011) | Apr 20, 2031 | 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 | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Apr 20, 2031 | High confidence |
This family
| US 8,797,029 | In force Jul 2032 | Jul 2032 |
| US 8,487,615 | this patent Apr 2031 | Apr 2031 |
| Application 13/856,562 | Abandoned not computed | not computed |
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 |
|---|---|---|---|
| Nov 22, 2011 Reel 27268, frame 128 | Zhu, Haoqin; Petropoulos, Labros; Schellekens, Wayne; Saunders, John; Lang, Michael; Fallah-rad, Mehran | Imris Inc. | Assignment of Assignor's Interest |
| Apr 15, 2015 Reel 35440, frame 401 | Imris Inc. | Deerfield Private Design Fund II, L.P.; Deerfield Private Design International II, L.P.; Deerfield Special Situations Fund, L.P. | Patent Security Agreement |
| Apr 15, 2015 reel/frame not recorded | Imris Inc. | Deerfield Private Design Fund II, L.P. | Patent Security Agreement |
| Apr 15, 2015 reel/frame not recorded | Imris Inc. | Deerfield Private Design International II, L.P. | Patent Security Agreement |
| Apr 15, 2015 reel/frame not recorded | Imris Inc. | Deerfield Special Situations Fund, L.P. | Patent Security Agreement |
| Apr 14, 2022 Reel 59715, frame 394 | Deerfield Imaging Holdings, Inc.; Deerfield Imaging, Inc. | Trinity Capital Inc. | Intellectual Property Security Agreement |
| Apr 15, 2022 Reel 59611, frame 714 | Deerfield Private Design Fund II, L.P.; Deerfield Private Design International II, L.P.; Deerfield Special Situations Fund, L.P. | Imris Inc. | Release of Security Interest |
| May 3, 2022 Reel 59799, frame 471 | Imris Inc. | 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.
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Alerts on its grants, lapses and transfers.
What's changing
Apr 2031
Term ends Apr 20, 2031. No further fees fall due before then
Citations
28
later US patents cite this one
That is top 25% of utility patents granted in 2013 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.