Collateral for a security interest recorded May 31, 2024 (Perceptive Credit Holdings IV, LP).
Term ends Oct 31, 2029 · High confidence
20-year base term ended Oct 15, 2025
Held by Spinal Elements, Inc.
Filed Oct 15, 2005 as application 11/251,205 · Granted Apr 5, 2011
Base term plus 1477 days of patent term adjustment (USPTO delay)
Today
2005
2029
Clock starts
Oct 15, 2005
Oct 15, 2005
Term ends
Oct 31, 2029
Oct 31, 2029
Granted
Apr 5, 2011
Apr 5, 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
1,477
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.
65
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 1477 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 Oct 15, 2005, when this application, 11/251,205, was filed | Oct 15, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1477 days, USPTO patent term adjustment record | Oct 31, 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 | Oct 31, 2029 | High confidence |
This family
| US 7,918,849 | this patent Oct 2029 | Oct 2029 |
| US 8,192,435 | Lapsed on the fee record Jun 2024 | Jun 2024 |
| US 7,553,307 | In force Feb 2027 | Feb 2027 |
| US 7,887,538 | In force Jan 2027 | Jan 2027 |
| US 7,938,830 | Lapsed on the fee record May 2023 | May 2023 |
| US 8,430,881 | In force Jun 2027 | Jun 2027 |
| US 8,048,080 | In force Dec 2027 | Dec 2027 |
| US 7,578,819 | Term ended Oct 2025 | Oct 2025 |
8 of 65 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 6, 2006 Reel 16981, frame 315 | Bleich, Jeffery L.; Spisak, Steven A. | Baxano, Inc. | Assignment of Assignor's Interest |
| Nov 18, 2013 Reel 31666, frame 526 | Baxano, Inc. | Baxano Surgical, Inc. | Change of Name |
| Feb 11, 2015 Reel 34947, frame 732 | Baxano Surgical, Inc. | Exworks Capital Fund I, L.P. | Assignment of Assignor's Interest |
| Feb 11, 2015 Reel 34954, frame 526 | Baxano Surgical, Inc. | Quandary Medical, LLC | Assignment of Assignor's Interest |
| May 7, 2015 Reel 35613, frame 952 | Exworks Capital Fund I, L.P. | Amendia, Inc. | Assignment of Assignor's Interest |
| May 2, 2016 Reel 38587, frame 753 | Amendia, Inc. | Antares Capital LP, as Agent | Security Interest |
| May 4, 2016 Reel 38606, frame 520 | Amendia, Inc. | Cortland Capital Market Services LLC, as Agent | Security Interest |
| Oct 18, 2017 Reel 44343, frame 94 | Quandary Medical LLC | Mis IP Holdings LLC | Assignment of Assignor's Interest |
| Aug 22, 2019 Reel 51364, frame 541 | Amendia, Inc. | Amendia, Inc. | Assignment Correction Under Mpep 323.01(C) at Reel 034954 Frame 0526. |
| Sep 18, 2019 Reel 51797, frame 221 | Quandary Medical LLC | Schell, Jeffrey | Security Interest |
| Jan 22, 2020 Reel 51665, frame 979 | Spinal Elements, Inc.; Amendia, Inc. | Spinal Elements, Inc. | Merger and Change of Name |
| May 31, 2024 Reel 67596, frame 295 | Spinal Elements, Inc.; Custom Spine Acquisition, Inc.; Omni Acquisition Inc. | Perceptive Credit Holdings IV, LP | Security Interest |
| Jun 3, 2024 Reel 67605, frame 599 | Antares Capital LP, as Administrative Agent | Spinal Elements, Inc. (F.K.A. Amendia, Inc.) | Release of Security Interest |
| Jun 3, 2024 Reel 67605, frame 676 | Cortland Capital Market Services LLC, as Agent | Spinal Elements, Inc. (F.K.A. Amendia, 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
Oct 2029
Term ends Oct 31, 2029. No further fees fall due before then
Note
The 1477 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
304
later US patents cite this one
That is top 5% 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.