Term ended Mar 1, 2026 · High confidence
20-year base term ended Feb 26, 2023
Held by Ciena Corporation
Filed Feb 26, 2003 as application 10/374,882 · Granted Oct 2, 2007
Base term plus 1099 days of patent term adjustment (USPTO delay)
Today
Term ended Mar 1, 2026
2003
2026
Clock starts
Feb 26, 2003
Feb 26, 2003
Term ended
Mar 1, 2026
Mar 1, 2026
Granted
Oct 2, 2007
Oct 2, 2007
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
1,099
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 1099 days past its 20-year base term on prosecution delay. All three maintenance fees were paid, so no fee lapse ended it. 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 Feb 26, 2003, when this application, 10/374,882, was filed | Feb 26, 2023 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1099 days, USPTO patent term adjustment record | Mar 1, 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 | Mar 1, 2026 | High confidence |
This family
| US 7,277,393 | this patent Mar 2026 | Mar 2026 |
| US 7,688,740 | Lapsed on the fee record Mar 2022 | Mar 2022 |
| US 9,026,674 | In force Nov 2030 | Nov 2030 |
| US 8,547,851 | Term ended no later than May 2023 | no later than May 2023 |
| Application 14/703,305 | Abandoned not computed | not computed |
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 26, 2003 Reel 13824, frame 562 | Jacobson, Van; Yu, Haobo | Packet Design LLC | Assignment of Assignor's Interest |
| Mar 25, 2003 Reel 13881, frame 246 | Packet Design, LLC | Packet Design, Inc. | Assignment of Assignor's Interest |
| Oct 6, 2011 Reel 27024, frame 720 | Packet Design, Inc., a Delaware Corporation | Comerica Bank, a Texas Banking Association | Security Agreement |
| Mar 15, 2013 Reel 30022, frame 136 | Comerica Bank | Packet Design, Inc. | Release of Security Interest |
| Mar 26, 2013 Reel 30089, frame 810 | Packet Design, Inc. | PD Acquisition, LLC | Assignment of Assignor's Interest |
| Mar 26, 2013 Reel 30091, frame 880 | PD Acquisition, LLC | Packet Design, LLC | Change of Name |
| Sep 10, 2014 Reel 33713, frame 276 | Packet Design, LLC | Comerica Bank | Security Interest |
| Jul 2, 2018 Reel 46464, frame 226 | Comerica Bank | Packet Design, LLC | Release of Security Interest at Reel 033713 / Frame 0276 |
| Jul 13, 2018 Reel 46342, frame 761 | Packet Design, LLC | Ciena Corporation | Merger |
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 1099 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
17
later US patents cite this one
That is above the median of utility patents granted in 2007 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.