Also listed on Coskata, Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Aug 14, 2029 · High confidence
20-year base term ends Dec 16, 2028
Held by Synata Bio, Inc.
Filed Dec 16, 2008 as application 12/336,278 · Granted Oct 18, 2011
Base term plus 241 days of patent term adjustment (USPTO delay)
Today
2008
2029
Clock starts
Dec 16, 2008
Dec 16, 2008
Term ends
Aug 14, 2029
Aug 14, 2029
Granted
Oct 18, 2011
Oct 18, 2011
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.
5
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 Dec 16, 2008, when this application, 12/336,278, was filed | Dec 16, 2028 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +241 days, USPTO patent term adjustment record | Aug 14, 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 | Aug 14, 2029 | High confidence |
This family
| US 8,039,239 | this patent Aug 2029 | Aug 2029 |
| US 8,628,943 | Lapsed on the fee record Jan 2026 | Jan 2026 |
| Application PCT/US2010/043962 | PCT application no patent term | no patent term |
| US 9,045,760 | In force Aug 2029 | Aug 2029 |
| US 9,284,538 | In force May 2029 | May 2029 |
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 16, 2008 Reel 21989, frame 515 | Reeves, Andrew | Coskata, Inc. | Assignment of Assignor's Interest |
| Oct 23, 2015 Reel 36933, frame 596 | Coskata, Inc. | Vinod Khosla and Neeru Khosla, Trustees of the KFT Trust Dated November 17, 1986; Khosla Ventures III, LP; Advanced Technology Ventures VII, L.P.; Advanced Technology Ventures VII (B), L.P.; Advanced Technology Ventures VII (C), L.P.; Atv Entrepreneurs VII, LP | Security Interest |
| Oct 23, 2015 reel/frame not recorded | Coskata, Inc. | Vinod Khosla and Neeru Khosla, Trustees of the KFT Trust Dated November 17, 1986 | Security Interest |
| Oct 23, 2015 reel/frame not recorded | Coskata, Inc. | Khosla Ventures III, LP | Security Interest |
| Oct 23, 2015 reel/frame not recorded | Coskata, Inc. | Advanced Technology Ventures VII, L.P. | Security Interest |
| Oct 23, 2015 reel/frame not recorded | Coskata, Inc. | Advanced Technology Ventures VII (B), L.P. | Security Interest |
| Oct 23, 2015 reel/frame not recorded | Coskata, Inc. | Advanced Technology Ventures VII (C), L.P. | Security Interest |
| Oct 23, 2015 reel/frame not recorded | Coskata, Inc. | Atv Entrepreneurs VII, LP | Security Interest |
| Nov 23, 2015 Reel 37153, frame 659 | Vinod Khosla and Neeru Khosla, Trustees of the KFT Trust Dated November 17, 1986; Khosla Ventures III, LP; Advanced Technology Ventures VII, L.P.; Advanced Technology Ventures VII (B), L.P.; Advanced Technology Ventures VII (C), L.P.; Atv Entrepreneurs VII, LP | Coskata, Inc. | Release of Security Interest |
| Mar 16, 2016 Reel 38118, frame 397 | Coskata Inc. | Coskata (Assignment for the Benefit of Creditors), LLC. | Assignment of Assignor's Interest |
| Mar 16, 2016 Reel 38118, frame 733 | Coskata (Assignment for the Benefit of Creditors), LLC. | Synata Bio, Inc. | Assignment of Assignor's Interest |
| May 16, 2016 Reel 38709, frame 722 | Coskata, Inc. | Synata Bio, Inc. | Assignment of Assignor's Interest |
| Oct 30, 2017 Reel 44310, frame 659 | Coskata, LLC | Synata Bio, Inc. | Corrective Assignment to Correct the Assignor Previously Recorded on Reel 038709 Frame 0722. Assignor(S) Hereby Confirms the Assignment. |
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
Aug 2029
Term ends Aug 14, 2029. 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
22
later US patents cite this one
That is above the median of utility patents granted in 2011 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.