Lapsed May 10, 2023 on the fee record · Medium confidence
20-year base term ended Oct 15, 2025
Why Medium: A parent in the chain could not be resolved.
Third maintenance fee unpaid; grace period ended.
Held by Spinal Elements, Inc.
Filed Apr 17, 2006 as application 11/406,486 · Granted May 10, 2011
Base term, 20 years from filing, plus 666 days of patent term adjustment (USPTO delay)
Today
Lapsed May 10, 2023
2005
2027
Clock starts
Oct 15, 2005
Oct 15, 2005
No longer in force
May 10, 2023
May 10, 2023
Granted
May 10, 2011
May 10, 2011
Term would have run to
Aug 12, 2027
Aug 12, 2027
base term
patent term adjustment
after the term ends
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
666
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.
65
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
Its term would have run to Aug 12, 2027: its 20-year base term plus 666 days of term adjustment for prosecution delay. Confidence: Medium. 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 application PCT/US2005/037136, the earliest non-provisional in its chain, was filed (this one was filed Apr 17, 2006); a parent in its chain could not be resolved (the next row) | Oct 15, 2025 | High confidence |
| Continuity chain | A parent in the chain could not be resolved | dated from this application's own claim | Medium confidence |
| Patent term adjustment | +666 days, USPTO patent term adjustment record | Aug 12, 2027 | 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 | lapsed May 10, 2023 | High confidence |
| Computed term end | The steps above, in order | May 10, 2023 | Medium confidence |
This family
| US 7,918,849 | In force 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 | this patent 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 |
|---|---|---|---|
| Jun 14, 2006 Reel 17784, frame 930 | Saadat, Vahid; Bleich, Jeffery; Michlitsch, Kenneth; Ashley, John | 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 |
| 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
Note
The 666 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
390
later US patents cite this one
That is top 1% 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.