Term ended no later than Feb 12, 2023 · Low confidence
20-year base term ended Feb 3, 2023
Filed Apr 30, 2004 as application 10/836,878 · Granted Mar 25, 2008
Base term plus 9 days of patent term adjustment (USPTO delay)
Today
Ended no later than Feb 12, 2023
2003
2026
Clock starts
Feb 3, 2003
Feb 3, 2003
Ended no later than
Feb 12, 2023
Feb 12, 2023
Granted
Mar 25, 2008
Mar 25, 2008
base term
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
9
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Unresolved
Terminal disclaimer
On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.
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 9 days past its 20-year base term on prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. All three maintenance fees were paid, so no fee lapse ended it. Confidence: Low. 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 Feb 3, 2003, when application PCT/US2003/003323, the earliest non-provisional in its chain, was filed (this one was filed Apr 30, 2004); a parent in its chain could not be resolved (the next row) | Feb 3, 2023 | 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 | +9 days, USPTO patent term adjustment record | Feb 12, 2023 | High confidence |
| Terminal disclaimer cap | Disclaimer on file (approved), reference document not resolved | no cap applied, and none guessed | Medium 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 | no later than Feb 12, 2023 | Low confidence |
This family
| US 6,849,852 | Term ended Feb 2021 | Feb 2021 |
| Application PCT/US2002/036584 | PCT application no patent term | no patent term |
| Application PCT/US2002/038265 | PCT application no patent term | no patent term |
| Application PCT/US2003/003203 | PCT application no patent term | no patent term |
| Application PCT/US2003/003181 | PCT application no patent term | no patent term |
| Application PCT/US2003/003323 | PCT application no patent term | no patent term |
| Application PCT/US2003/039553 | PCT application no patent term | no patent term |
| US 7,348,608 | this patent no later than Feb 2023 | no later than Feb 2023 |
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 |
|---|---|---|---|
| Aug 6, 2004 Reel 15654, frame 211 | Ko, Cheng C.; Levine, Barry | Picometrix, Inc. | Assignment of Assignor's Interest |
| Mar 14, 2005 Reel 15896, frame 210 | Picotronix, Inc. | Advanced Photonix, Inc. | Security Agreement |
| Apr 15, 2005 Reel 16097, frame 315 | Picotronix, Inc. | Advanced Photonix, Inc. | Security Agreement |
| May 5, 2005 Reel 15972, frame 636 | Advanced Photonix, Inc. | Picotronix, Inc. | Reassignment and Release of Security Interest |
| May 5, 2005 Reel 15972, frame 655 | Advanced Photonix, Inc.; Picotronix, Inc. | Risser, Robin F. | Security Agreement |
| Oct 25, 2012 Reel 29191, frame 888 | Risser, Robin | Advanced Photonix, Inc.; Picometrix, LLC | Release of Security Interest |
| Oct 25, 2012 reel/frame not recorded | Risser, Robin | Advanced Photonix, Inc. | Release of Security Interest |
| Oct 25, 2012 reel/frame not recorded | Risser, Robin | Picometrix, LLC | Release of Security Interest |
| Feb 12, 2013 Reel 29800, frame 507 | Picometrix, LLC | Partners for Growth III, L.P. | Security Agreement |
| Mar 12, 2014 Reel 32420, frame 795 | Picometrix, LLC | Silicon Valley Bank | Security Interest |
| May 19, 2015 Reel 35719, frame 460 | Advanced Photonix, Inc.; Picometrix, LLC | Silicon Valley Bank | Security Agreement |
| Aug 4, 2017 Reel 43443, frame 887 | Partners for Growth III, L.P. | Advanced Photonix, Inc.; Picometrix, LLC | Release of Security Interest |
| Aug 4, 2017 reel/frame not recorded | Partners for Growth III, L.P. | Advanced Photonix, Inc. | Release of Security Interest |
| Aug 4, 2017 reel/frame not recorded | Partners for Growth III, L.P. | Picometrix, LLC | Release of Security Interest |
| Jan 18, 2018 Reel 44649, frame 282 | Advanced Photonix, Inc.; Picometrix, LLC | Macom Technology Solutions Holdings, Inc. | 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Note
A terminal disclaimer is on file and its reference is not resolved. No cap is applied and none is guessed
Note
The 9 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Open question
A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than Feb 12, 2023. We will not guess the cap.
Citations
94
later US patents cite this one
That is top 10% of utility patents granted in 2008 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
This computed term ends no later than the date shown; an unresolved terminal disclaimer may end it earlier. Related patents and pending applications may cover overlapping subject matter.