Also listed on Piccata Fund Limited Liability Company, an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Aug 9, 2027 · High confidence
20-year base term ended Feb 9, 2025
Held by E2E Systems LLC
Filed Jan 20, 2009 as application 12/356,232 · Granted Oct 22, 2013
Base term plus 911 days of patent term adjustment (USPTO delay)
Today
2005
2027
Clock starts
Feb 9, 2005
Feb 9, 2005
Term ends
Aug 9, 2027
Aug 9, 2027
Granted
Oct 22, 2013
Oct 22, 2013
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
911
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.
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 911 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 9, 2005, when application 11/054,221, the earliest non-provisional in its chain, was filed (this one was filed Jan 20, 2009) | Feb 9, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +911 days, USPTO patent term adjustment record | Aug 9, 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 | Aug 9, 2027 | High confidence |
This family
| US 7,505,751 | Term ended May 2026 | May 2026 |
| US 8,565,164 | this patent Aug 2027 | Aug 2027 |
| US 9,100,990 | Term ended no later than Feb 2025 | no later than Feb 2025 |
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 |
|---|---|---|---|
| Mar 10, 2009 Reel 22371, frame 207 | Backes, Floyd | Autocell Laboratories Inc. | Assignment of Assignor's Interest |
| Mar 13, 2012 Reel 27852, frame 201 | Autocell Laboratories, Inc. | Piccata Fund Limited Liability Company | Assignment of Assignor's Interest |
| Apr 18, 2012 Reel 28068, frame 350 | Backes, Floyd | Propagate Networks, Inc. | Assignment of Assignor's Interest |
| Apr 18, 2012 Reel 28070, frame 486 | Propagate Networks, Inc. | Autocell Laboratories, Inc. | Change of Name |
| Sep 24, 2015 Reel 36675, frame 195 | Piccata Fund Limited Liability Company | Xenogenic Development Limited Liability Company | Merger |
| Nov 9, 2022 Reel 61710, frame 611 | Xenogenic Development Limited Liability Company | Intellectual Ventures II LLC | Assignment of Assignor's Interest |
| Apr 8, 2026 Reel 74310, frame 342 | Intellectual Ventures II LLC | Intellectual Ventures Assets 202 LLC | Assignment of Assignor's Interest |
| May 31, 2026 Reel 74804, frame 183 | 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
Aug 2027
Term ends Aug 9, 2027. No further fees fall due before then
Note
The 911 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
12
later US patents cite this one
That is above the median of utility patents granted in 2013 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.