Collateral for a security interest recorded May 27, 2022 (BMO Harris Bank, N.A.).
Term ends Jan 3, 2028 · High confidence
20-year base term ended Oct 5, 2026
Filed Oct 5, 2006 as application 11/539,129 · Granted Aug 2, 2011
Base term plus 455 days of patent term adjustment (USPTO delay)
Today
2006
2028
Clock starts
Oct 5, 2006
Oct 5, 2006
Term ends
Jan 3, 2028
Jan 3, 2028
Granted
Aug 2, 2011
Aug 2, 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
455
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.
6
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 455 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 5, 2006, when this application, 11/539,129, was filed | Oct 5, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +455 days, USPTO patent term adjustment record | Jan 3, 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 | Jan 3, 2028 | High confidence |
This family
| US 7,989,016 | this patent Jan 2028 | Jan 2028 |
| Application PCT/US2007/080510 | PCT application no patent term | no patent term |
| US 8,197,878 | Term ended Oct 2026 | Oct 2026 |
| US 8,329,236 | Term ended Oct 2026 | Oct 2026 |
| US 8,802,181 | Lapsed on the fee record Aug 2026 | Aug 2026 |
| US 9,549,568 | Term ended Oct 2026 | Oct 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 |
|---|---|---|---|
| May 6, 2011 Reel 26236, frame 966 | Chigurupati, Sambasiva Rao | S & P Ingredient Development, LLC | Assignment of Assignor's Interest |
| Jun 1, 2011 Reel 26372, frame 321 | Chigurupati, Sambasiva Rao; Manuel, Thomas L.; Fahey, Michael G. | S & P Ingredient Development, LLC | Assignment of Assignor's Interest |
| Jun 23, 2011 Reel 26498, frame 780 | Chigurupati, Sambasiva Rao | Chigurupati, Sambasiva Rao; Manuel, Thomas L.; Fahey, Michael G. | Corrective Assignment to Correct the Assignee from S & P Ingredient Development, LLC to Sambasiva Rao Chigurupati, Thomas L. Manuel and Michael G. Fahey Previously Recorded on Reel 026236 Frame 0966. Assignor(S) Hereby Confirms the Assignment of All Assignor's Right, Title and Interest. |
| Jun 23, 2011 reel/frame not recorded | Chigurupati, Sambasiva Rao | Chigurupati, Sambasiva Rao | Corrective Assignment to Correct the Assignee from S & P Ingredient Development, LLC to Sambasiva Rao Chigurupati, Thomas L. Manuel and Michael G. Fahey Previously Recorded on Reel 026236 Frame 0966. Assignor(S) Hereby Confirms the Assignment of All Assignor's Right, Title and Interest. |
| Jun 23, 2011 reel/frame not recorded | Chigurupati, Sambasiva Rao | Manuel, Thomas L. | Corrective Assignment to Correct the Assignee from S & P Ingredient Development, LLC to Sambasiva Rao Chigurupati, Thomas L. Manuel and Michael G. Fahey Previously Recorded on Reel 026236 Frame 0966. Assignor(S) Hereby Confirms the Assignment of All Assignor's Right, Title and Interest. |
| Jun 23, 2011 reel/frame not recorded | Chigurupati, Sambasiva Rao | Fahey, Michael G. | Corrective Assignment to Correct the Assignee from S & P Ingredient Development, LLC to Sambasiva Rao Chigurupati, Thomas L. Manuel and Michael G. Fahey Previously Recorded on Reel 026236 Frame 0966. Assignor(S) Hereby Confirms the Assignment of All Assignor's Right, Title and Interest. |
| Mar 17, 2016 Reel 38135, frame 942 | S & P Ingredient Development, LLC | Comerica Bank | Security Interest |
| Apr 30, 2021 Reel 56096, frame 81 | S & P Ingredient Development, LLC | Proterra Finance LLC, as Collateral Agent | Security Interest |
| May 4, 2021 Reel 56129, frame 794 | Comerica Bank | S & P Ingredient Development, LLC | Release of Security Interest |
| May 27, 2022 Reel 60204, frame 584 | S & P Ingredient Development, LLC | BMO Harris Bank, N.A., as Administrative Agent | Security Agreement |
| Jun 2, 2022 Reel 60088, frame 345 | Proterra Finance LLC, as Collateral Agent | S & P Ingredient Development, LLC | 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 2028
Term ends Jan 3, 2028. No further fees fall due before then
Note
The 455 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
13
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.