Term ends Jan 21, 2034 · High confidence
20-year base term ends Sep 27, 2032
Held by Tyfone, Inc.
Filed Sep 27, 2012 as application 13/629,595 · Granted Jul 7, 2015
Base term plus 481 days of patent term adjustment (USPTO delay)
Today
2012
2034
Clock starts
Sep 27, 2012
Sep 27, 2012
Term ends
Jan 21, 2034
Jan 21, 2034
Granted
Jul 7, 2015
Jul 7, 2015
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
481
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.
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 481 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 Sep 27, 2012, when this application, 13/629,595, was filed | Sep 27, 2032 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +481 days, USPTO patent term adjustment record | Jan 21, 2034 | 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 | Jan 21, 2034 | High confidence |
This family
| US 9,077,794 | this patent Jan 2034 | Jan 2034 |
| US 9,166,281 | In force Sep 2032 | Sep 2032 |
| US 9,281,633 | In force Sep 2032 | Sep 2032 |
| US 9,520,684 | In force Sep 2032 | Sep 2032 |
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 |
|---|---|---|---|
| Jan 28, 2013 Reel 29707, frame 560 | Narendra, Siva G.; Bloodworth, Donald Allen | Tyfone, Inc.; Tyfone, Inc. | Assignment of Assignor's Interest |
| Jan 28, 2013 reel/frame not recorded | Bloodworth, Donald Allen; Narendra, Siva G. | Tyfone, Inc. | Assignment of Assignor's Interest |
| Jan 28, 2013 reel/frame not recorded | Bloodworth, Donald Allen; Narendra, Siva G. | Tyfone, Inc. | Assignment of Assignor's Interest |
| Jun 19, 2014 Reel 33138, frame 313 | Narendra, Siva G; Tadepalli, Prabhakar; Chakraborty, Saurav | 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
Jan 2034
Term ends Jan 21, 2034. Maintenance fees still fall due before then
Note
The 481 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
19
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.