Term ends Jun 4, 2032 · High confidence
20-year base term ends Oct 7, 2031
Held by Salamander IP Holdings LLC
Filed Oct 7, 2011 as application 13/268,246 · Granted Nov 19, 2013
Base term plus 241 days of patent term adjustment (USPTO delay)
Today
2011
2032
Clock starts
Oct 7, 2011
Oct 7, 2011
Term ends
Jun 4, 2032
Jun 4, 2032
Granted
Nov 19, 2013
Nov 19, 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
241
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 241 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 Oct 7, 2011, when this application, 13/268,246, was filed | Oct 7, 2031 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +241 days, USPTO patent term adjustment record | Jun 4, 2032 | 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 | Jun 4, 2032 | High confidence |
This family
| US 8,586,867 | this patent Jun 2032 | Jun 2032 |
| US 9,337,550 | In force Jun 2032 | Jun 2032 |
| US 9,755,415 | In force Oct 2031 | Oct 2031 |
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 24, 2012 Reel 27585, frame 948 | Coles, John Matthew; Stone, Francis Marion, JR.; Harmason, Patrick Silas; D'Angelo, Charles, III; Burns, David Booth | Shell Oil Company | Assignment of Assignor's Interest |
| May 30, 2019 Reel 49317, frame 371 | Shell Oil Company | Salamander Solutions Inc. | Assignment of Assignor's Interest |
| Jan 13, 2023 Reel 63074, frame 512 | Salamander Solutions Inc.; Salamander Solutions Limited | Salamander International LLC | Assignment of Assignor's Interest |
| Mar 21, 2023 Reel 63045, frame 760 | Salamander International LLC | Salamander International Holdings LLC | Assignment of Assignor's Interest |
| Mar 22, 2023 Reel 63141, frame 685 | Salamander International Holdings LLC | DMCX7318 Ltd. | Assignment of Assignor's Interest |
| Mar 23, 2023 Reel 63147, frame 759 | DMCX7318 Ltd. | Salamander IP Holdings 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
Jun 2032
Term ends Jun 4, 2032. No further fees fall due before then
Note
The 241 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
28
later US patents cite this one
That is top 25% 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.