Term ends Sep 22, 2028 · Medium confidence
20-year base term ends Dec 13, 2027
Why Medium: A parent in the chain could not be resolved.
Held by Intelliserv, LLC
Filed Feb 2, 2009 as application 12/364,372 · Granted May 8, 2012
Base term plus 284 days of patent term adjustment (USPTO delay)
Today
2007
2028
Clock starts
Dec 13, 2007
Dec 13, 2007
Term ends
Sep 22, 2028
Sep 22, 2028
Granted
May 8, 2012
May 8, 2012
base term
patent term adjustment
fee events
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
284
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 284 days past its 20-year base term on prosecution delay. All three maintenance fees are recorded paid; no more fees are due. Confidence: Medium. 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 Dec 13, 2007, when application 11/955,518, the earliest non-provisional in its chain, was filed (this one was filed Feb 2, 2009); a parent in its chain could not be resolved (the next row) | Dec 13, 2027 | High confidence |
| Continuity chain | A parent in the chain could not be resolved | dated from this application's own claim | Medium confidence |
| Patent term adjustment | +284 days, USPTO patent term adjustment record | Sep 22, 2028 | 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 | Sep 22, 2028 | Medium confidence |
This family
| US 8,172,007 | this patent Sep 2028 | Sep 2028 |
| Application 12/575,866 | Abandoned not computed | not computed |
| Application PCT/US2010/022917 | PCT application no patent term | no patent term |
3 of 4 applications in this family shown, earliest filings first. 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 |
|---|---|---|---|
| Apr 30, 2009 Reel 22620, frame 620 | Dolman, Lee; Bailey, Louise; Johnson, Ashley B.; Oag, Alistair | Schlumberger Technology Corporation | Assignment of Assignor's Interest |
| Aug 30, 2010 Reel 24905, frame 1 | Schlumberger Technology Corporation | Intelliserv, LLC | Assignment of Assignor's Interest |
| Aug 31, 2010 Reel 24912, frame 686 | Bailey, Louise; Johnson, Ashley Bernard; Oag, Alistair William; Dolman, Lee | Schlumberger Technology Corporation | 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Sep 2028
Term ends Sep 22, 2028. No further fees fall due before then
Note
The 284 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
46
later US patents cite this one
That is top 25% of utility patents granted in 2012 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.