Also listed on Photothera, Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Oct 12, 2027 · High confidence
20-year base term ended Mar 21, 2026
Held by Pthera, LLC
Filed Mar 21, 2006 as application 11/385,988 · Granted Aug 18, 2009
Base term plus 570 days of patent term adjustment (USPTO delay)
Today
2006
2027
Clock starts
Mar 21, 2006
Mar 21, 2006
Term ends
Oct 12, 2027
Oct 12, 2027
Granted
Aug 18, 2009
Aug 18, 2009
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
570
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.
5
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 570 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 Mar 21, 2006, when this application, 11/385,988, was filed | Mar 21, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +570 days, USPTO patent term adjustment record | Oct 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 | 3 of 3 maintenance fees paid | In force (reinstated) | High confidence |
| Computed term end | The steps above, in order | Oct 12, 2027 | High confidence |
This family
| US 7,575,589 | this patent Oct 2027 | Oct 2027 |
| Application PCT/US2007/002219 | PCT application no patent term | no patent term |
| US 10,188,872 | In force Oct 2027 | Oct 2027 |
| US 11,179,572 | Term ended Jul 2026 | Jul 2026 |
| US 12,303,709 | Term ended Jul 2026 | Jul 2026 |
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 23, 2006 Reel 18013, frame 317 | De Taboada, Luis; Streeter, Jackson M.d. | Photothera, Inc. | Assignment of Assignor's Interest |
| Aug 29, 2008 Reel 21462, frame 135 | Photothera, Inc. | Lighthouse Capital Partners VI, L.P. | Security Agreement |
| Sep 3, 2008 Reel 21462, frame 922 | Photothera, Inc. | Warburg Pincus Private Equity IX, L.P. | Security Agreement |
| May 13, 2009 Reel 22678, frame 273 | Lighthouse Capital Partners VI, L.P. | Photothera, Inc. | Release of Security Interest |
| May 22, 2009 Reel 22722, frame 784 | Warburg Pincus Private Equity IX, L.P. | Photothera, Inc. | Termination of Patent Security Agreement |
| Feb 22, 2011 Reel 25829, frame 859 | Photothera, Inc. | Oxford Finance Corporation; Comerica Bank | Security Agreement |
| Feb 22, 2011 reel/frame not recorded | Photothera, Inc. | Oxford Finance Corporation | Security Agreement |
| Feb 22, 2011 reel/frame not recorded | Photothera, Inc. | Comerica Bank | Security Agreement |
| Oct 5, 2012 Reel 29082, frame 677 | Photothera, Inc. | Photothera IP Holdings, Inc. | Assignment of Assignor's Interest |
| Apr 26, 2016 Reel 38383, frame 232 | Advanced Photonics Solutions, Inc. | Pthera, LLC | Assignment of Assignor's Interest |
| Aug 2, 2016 Reel 39537, frame 373 | Advanced Photonics Solutions, Inc. | Pthera, LLC | Corrective Assignment to Correct the Incorrect Execution Date Previously Recorded on Reel 038383 Frame 0232. Assignor(S) Hereby Confirms the Assignment. |
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
Oct 2027
Term ends Oct 12, 2027. No further fees fall due before then
Note
The 570 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
62
later US patents cite this one
That is top 25% of utility patents granted in 2009 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.