Also listed on Flexuspine, Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Dec 4, 2027 · High confidence
20-year base term ended Aug 5, 2023
Held by Tyler Fusion Technologies, LLC
Filed May 20, 2005 as application 11/134,079 · Granted Apr 3, 2012
Base term plus 1582 days of patent term adjustment (USPTO delay)
Today
2003
2027
Clock starts
Aug 5, 2003
Aug 5, 2003
Term ends
Dec 4, 2027
Dec 4, 2027
Granted
Apr 3, 2012
Apr 3, 2012
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
1,582
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.
27
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 1582 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 Aug 5, 2003, when application 10/634,950, the earliest non-provisional in its chain, was filed (this one was filed May 20, 2005) | Aug 5, 2023 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1582 days, USPTO patent term adjustment record | Dec 4, 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 | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Dec 4, 2027 | High confidence |
This family
| US 7,204,853 | Term ended Sep 2024 | Sep 2024 |
| US 7,316,714 | Term ended Sep 2023 | Sep 2023 |
| US 7,909,869 | Term ended Jun 2025 | Jun 2025 |
| Application PCT/US2004/025090 | PCT application no patent term | no patent term |
| US 7,753,958 | Lapsed on the fee record Jul 2022 | Jul 2022 |
| US 8,123,810 | In force Feb 2028 | Feb 2028 |
| Application 11/134,092 | Abandoned not computed | not computed |
| US 8,118,871 | Lapsed on the fee record Feb 2024 | Feb 2024 |
8 of 27 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 |
|---|---|---|---|
| Mar 30, 2006 Reel 17729, frame 468 | Hanson, Heather S. | Southwest Research Institute | Assignment of Assignor's Interest |
| Mar 30, 2006 Reel 17729, frame 505 | Southwest Research Institute | Flexuspine, Inc. | Assignment of Assignor's Interest |
| Mar 30, 2006 Reel 17728, frame 554 | Gordon, Charles R.; Harbold, Corey T. | Flexuspine, Inc. | Assignment of Assignor's Interest |
| Sep 26, 2023 Reel 65025, frame 374 | Flexuspine, Inc. | Tyler Fusion Technologies, LLC | Assignment of Assignor's 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.
What's changing
Dec 2027
Term ends Dec 4, 2027. No further fees fall due before then
Note
The 1582 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
171
later US patents cite this one
That is top 5% of utility patents granted in 2012 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.