Term ends Feb 11, 2027 · High confidence
20-year base term ended Feb 10, 2025
Held by E2E Systems LLC
Filed Feb 10, 2005 as application 11/055,589 · Granted Aug 25, 2009
Base term plus 731 days of patent term adjustment (USPTO delay)
Today
2005
2027
Clock starts
Feb 10, 2005
Feb 10, 2005
Term ends
Feb 11, 2027
Feb 11, 2027
Granted
Aug 25, 2009
Aug 25, 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
731
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.
4
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 731 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 Feb 10, 2005, when this application, 11/055,589, was filed | Feb 10, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +731 days, USPTO patent term adjustment record | Feb 11, 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 | Feb 11, 2027 | High confidence |
This family
| US 7,482,887 | In force Jan 2027 | Jan 2027 |
| US 7,323,945 | Term ended Apr 2025 | Apr 2025 |
| US 7,580,684 | this patent Feb 2027 | Feb 2027 |
| US 7,508,898 | In force Nov 2026 | Nov 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 |
|---|---|---|---|
| Sep 14, 2006 Reel 18265, frame 403 | Cyr, Russell J.; Dawe, Geoffrey C. | Bitwave Semiconductor, Inc. | Assignment of Assignor's Interest |
| Sep 14, 2011 Reel 26906, frame 531 | Bitwave Semiconductor | Tridev Research LLC | Assignment of Assignor's Interest |
| Sep 19, 2011 Reel 26930, frame 622 | Bitwave Semiconductor, Incorporated | Tridev Research LLC | Corrective Assignment to Correct the Assignor Name Previously Recorded on Reel 026906 Frame 0531. Assignor(S) Hereby Confirms the Assignor Name of Bitwave Semiconductor, Incorporated.. |
| Jan 20, 2016 Reel 37538, frame 760 | Tridev Research LLC | Gula Consulting Limited Liability Company | Merger |
| Apr 8, 2026 Reel 75480, frame 685 | Gula Consulting Limited Liability Company | Intellectual Ventures Assets 202 LLC | Assignment of Assignor's Interest |
| May 31, 2026 Reel 75531, frame 933 | Intellectual Ventures Assets 202 LLC | E2E Systems 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
Feb 2027
Term ends Feb 11, 2027. No further fees fall due before then
Note
The 731 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
87
later US patents cite this one
That is top 10% 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.