Term ends Aug 28, 2029 · High confidence
20-year base term ends Dec 21, 2027
Held by World Wide Packets, Inc.
Filed Oct 21, 2009 as application 12/603,467 · Granted Aug 18, 2015
Base term plus 616 days of patent term adjustment (USPTO delay)
Today
2007
2029
Clock starts
Dec 21, 2007
Dec 21, 2007
Term ends
Aug 28, 2029
Aug 28, 2029
Granted
Aug 18, 2015
Aug 18, 2015
base term
patent term adjustment
fee events
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
616
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
2 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.
3
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 616 days past its 20-year base term on prosecution delay. 2 of 3 maintenance fees are paid so far. 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 Dec 21, 2007, when application 11/963,719, the earliest non-provisional in its chain, was filed (this one was filed Oct 21, 2009) | Dec 21, 2027 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +616 days, USPTO patent term adjustment record | Aug 28, 2029 | 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 | 2 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Aug 28, 2029 | High confidence |
This family
| US 8,509,063 | In force Feb 2030 | Feb 2030 |
| US 9,112,781 | this patent Aug 2029 | Aug 2029 |
| US 9,565,056 | In force Dec 2027 | Dec 2027 |
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 |
|---|---|---|---|
| Oct 22, 2009 Reel 23411, frame 434 | Davison, Eric Stewart; Busch, Dackary Ronald | World Wide Packets, Inc. | Assignment of Assignor's Interest |
| Jul 15, 2014 Reel 33329, frame 417 | Ciena Corporation | Deutsche Bank AG New York Branch | Security Interest |
| Jul 16, 2014 Reel 33347, frame 260 | Ciena Corporation | Bank of America, N.A., as Administrative Agent | Patent Security Agreement |
| Oct 30, 2019 Reel 50938, frame 389 | Deutsche Bank AG New York Branch | Ciena Corporation | Release of Security Interest |
| Nov 8, 2019 Reel 50969, frame 1 | Ciena Corporation | Bank of America, N.A., as Collateral Agent | Patent Security Agreement |
| Nov 20, 2023 Reel 65630, frame 232 | Bank Of America, N.a. | Ciena Corporation | 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
Aug 2029
Term ends Aug 28, 2029. Maintenance fees still fall due before then
Note
The 616 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
22
later US patents cite this one
That is top 25% of utility patents granted in 2015 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.