Also listed on Spinal Elements, Inc., an earlier holder on the record. The recorded assignments below show how it moved.

Collateral for a security interest recorded May 31, 2024 (Perceptive Credit Holdings IV, LP).

Term ended Nov 6, 2026 · Medium confidence

Computed 20-year base term

Why Medium: A parent in the chain could not be resolved.

Held by Spinal Elements, Inc.

Filed Jul 16, 2009 as application 12/504,545 · Granted Apr 16, 2013

Base term plus 387 days of patent term adjustment (USPTO delay)

Today

20 years from filing

Term ended Nov 6, 2026

2005 2026

Clock starts
Oct 15, 2005

Term ended
Nov 6, 2026

Granted
Apr 16, 2013

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

387

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.

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 387 days past its 20-year base term on prosecution delay. All three maintenance fees were paid, so no fee lapse ended it. 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 applications 11/251,205 and PCT/US2005/037136, the earliest non-provisional applications in its chain, were filed (this one was filed Jul 16, 2009); 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	+387 days, USPTO patent term adjustment record	Nov 6, 2026	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	term ended	High confidence
Computed term end	The steps above, in order	Nov 6, 2026	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	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
Feb 11, 2010 Reel 23927, frame 574	Bleich, Jeffery L.; Leguidleguid, Ron; Bleam, Jefferey	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.

Free plan: 3 watched companies. Pro: unlimited.

Alerts on its grants, lapses and transfers.

What's changing

Note

The 387 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us

Citations

later US patents cite this one

That is top 10% 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.

Spinal Access and Neural Localization