Collateral for a security interest recorded Oct 18, 2021 (Goldman Sachs Bank USA).
Term ends Apr 24, 2028 · High confidence
20-year base term ended Nov 8, 2026
Held by Mitchell International, Inc.
Filed Nov 8, 2006 as application 11/557,943 · Granted Jun 12, 2012
Base term plus 533 days of patent term adjustment (USPTO delay)
Today
2006
2028
Clock starts
Nov 8, 2006
Nov 8, 2006
Term ends
Apr 24, 2028
Apr 24, 2028
Granted
Jun 12, 2012
Jun 12, 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
533
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 533 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 Nov 8, 2006, when this application, 11/557,943, was filed | Nov 8, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +533 days, USPTO patent term adjustment record | Apr 24, 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 | Apr 24, 2028 | High confidence |
This family
| US 8,200,707 | this patent Apr 2028 | Apr 2028 |
| US 8,694,556 | Term ended Nov 2026 | Nov 2026 |
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 |
|---|---|---|---|
| Feb 13, 2007 Reel 18887, frame 452 | Littooy, Hans; Pugliese, Vincent; Emmerson, Michael | Mitchell International, Inc. | Assignment of Assignor's Interest |
| Apr 26, 2007 Reel 19204, frame 991 | Mitchell International, Inc. | Goldman Sachs Credit Partners L.P., as Collateral Agent | Grant of Patent Security Interest (First Lien) |
| Apr 26, 2007 Reel 19215, frame 23 | Mitchell International, Inc. | Sumitomo Mitsui Banking Corporation, as Collateral Agent | Grant of Patent Security Interest (Second Lien) |
| Oct 11, 2013 Reel 31397, frame 696 | Sumitomo Mitsui Banking Corporation | Mitchell International, Inc. | Termination and Release of Security Interest in Patents |
| Oct 11, 2013 Reel 31397, frame 739 | Goldman Sachs Credit Partners L.P. | Mitchell International, Inc. | Termination and Release of Security Interest in Patents-First Lien |
| Oct 25, 2013 Reel 31495, frame 520 | Mitchell International, Inc. | Bank of America, N.A., as Collateral Agent | First Lien Security Interest |
| Oct 25, 2013 Reel 31495, frame 548 | Mitchell International, Inc. | Goldman Sachs Bank USA, as Collateral Agent | Second Lien Security Agreement |
| Nov 8, 2013 Reel 31607, frame 11 | Goldman Sachs Credit Partners, L.P., as Collateral Agent | Mitchell International, Inc. | Release (REEL 019204/FRAME 0991) |
| Nov 8, 2013 Reel 31607, frame 79 | Sumitomo Mitsui Banking Corporation, as Collateral Agent | Mitchell International, Inc. | Release (REEL 019215/FRAME 0023) |
| Dec 1, 2017 Reel 44594, frame 143 | Bank Of America, N.a. | Mitchell International, Inc. | Release of 1ST Lien Security Interest |
| Dec 1, 2017 Reel 44594, frame 431 | Goldman Sachs Bank USA | Mitchell International, Inc. | Release of 2ND Lien Security Interest |
| Dec 8, 2017 Reel 44760, frame 975 | Mitchell International, Inc. | Jefferies Finance LLC, as Collateral Agent | First Lien Security Agreement |
| Dec 11, 2017 Reel 44823, frame 678 | Mitchell International, Inc. | Jefferies Finance LLC, as Collateral Agent | Second Lien Security Agreement |
| Oct 18, 2021 Reel 57841, frame 875 | Jefferies Finance LLC | Mitchell International, Inc. | Release of First Lien Security Interest (REEL 044760/0975) |
| Oct 18, 2021 Reel 57841, frame 921 | Jefferies Finance LLC | Mitchell International, Inc. | Release of Second Lien Security Interest (REEL 044823/0678) |
| Oct 18, 2021 Reel 57842, frame 170 | Mitchell International, Inc. | Goldman Sachs Bank USA | Second Lien Security Agreement |
| Oct 18, 2021 Reel 58014, frame 629 | Mitchell International, Inc. | Goldman Sachs Bank USA | First Lien Security Agreement |
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 2028
Term ends Apr 24, 2028. No further fees fall due before then
Note
The 533 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
16
later US patents cite this one
That is above the median 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.