Term ends Apr 25, 2029 · High confidence
20-year base term ended Jul 15, 2025
Held by Tyfone, Inc.
Filed Jul 15, 2005 as application 11/182,520 · Granted Sep 28, 2010
Base term plus 1380 days of patent term adjustment (USPTO delay)
Today
2005
2029
Clock starts
Jul 15, 2005
Jul 15, 2005
Term ends
Apr 25, 2029
Apr 25, 2029
Granted
Sep 28, 2010
Sep 28, 2010
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
1,380
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.
2
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 1380 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 Jul 15, 2005, when this application, 11/182,520, was filed | Jul 15, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1380 days, USPTO patent term adjustment record | Apr 25, 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 | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Apr 25, 2029 | High confidence |
This family
| US 7,805,615 | this patent Apr 2029 | Apr 2029 |
| Application PCT/US2006/027978 | PCT application no patent term | no patent term |
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 |
|---|---|---|---|
| Dec 6, 2005 Reel 17162, frame 607 | Narendra, Siva G.; Tadepalli, Prabhakar; Spitzer, Thomas N. | Tyfone, Inc. | Assignment of Assignor's Interest |
| May 15, 2015 Reel 35685, frame 760 | Tyfone, Inc. | RPX Corporation | Security Interest |
| Aug 4, 2020 Reel 53396, frame 443 | RPX Corporation | Tyfone, Inc. | 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
Apr 2029
Term ends Apr 25, 2029. No further fees fall due before then
Note
The 1380 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
112
later US patents cite this one
That is top 10% of utility patents granted in 2010 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.