Term ends Feb 2, 2028 · High confidence
20-year base term ended Sep 8, 2026
Held by Renessenz, LLC
Filed Sep 8, 2006 as application 11/517,798 · Granted Jan 26, 2010
Base term plus 512 days of patent term adjustment (USPTO delay)
Today
2006
2028
Clock starts
Sep 8, 2006
Sep 8, 2006
Term ends
Feb 2, 2028
Feb 2, 2028
Granted
Jan 26, 2010
Jan 26, 2010
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
512
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 512 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 Sep 8, 2006, when this application, 11/517,798, was filed | Sep 8, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +512 days, USPTO patent term adjustment record | Feb 2, 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 | Feb 2, 2028 | High confidence |
This family
| US 7,652,067 | this patent Feb 2028 | Feb 2028 |
| Application PCT/US2007/017668 | PCT application no patent term | no patent term |
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 |
|---|---|---|---|
| Oct 4, 2006 Reel 18360, frame 773 | Erman, Mark B.; Snow, Joe W. | Millennium Specialty Chemicals, Inc. | Assignment of Assignor's Interest |
| Oct 31, 2006 Reel 18479, frame 11 | Erman, Mark B.; Snow, Joe W. | Millennium Specialty Chemicals, Inc. | Corrective Assignment to Correct the Document Docket Number Previously Recorded at Reel 018360 Frame 0773. |
| Apr 9, 2009 Reel 22520, frame 824 | Citibank, N.A., as Administrative Agent and Collateral Agent | Lyondell Chemical Company | Security Agreement |
| May 5, 2009 Reel 22634, frame 294 | Lyondell Chemical Company | Citibank, N.A., as Administrative Agent and Collateral Agent | Corrective Assignment to Correct the Conveying and Receiving Parties, Previously Recorded on Reel 022520 Frame 0824. Assignor(S) Hereby Confirms the Security Agreement.. |
| Oct 30, 2009 Reel 23449, frame 492 | Lyondell Chemical Company | UBS AG, Stamford Branch, as Collateral Agent | Security Agreement |
| May 5, 2010 Reel 24329, frame 957 | Citibank, N.A., as Collateral Agent | Lyondell Chemical Company | Release of Security Interest |
| May 5, 2010 Reel 24337, frame 212 | UBS AG, Stamford Branch, as Collateral Agent | Lyondell Chemical Company | Release of Security Interest |
| May 6, 2010 Reel 24342, frame 135 | Lyondellbasell Flavors & Fragrances, LLC | Deutsche Bank Trust Company Americas, as Collateral Agent | Security Agreement |
| May 7, 2010 Reel 24351, frame 40 | Lyondellbasell Flavors & Fragrances, LLC | UBS AG, Stamford Branch, as Collateral Agent | Security Agreement |
| May 18, 2010 Reel 24397, frame 898 | Lyondellbasell Flavors & Fragrances, LLC | Citibank, N.A., as Administrative Agent | Security Agreement |
| May 19, 2010 Reel 24402, frame 727 | Lyondellbasell Flavors & Fragrances, LLC | Wells Fargo Bank, National Association, as Collateral Agent | Security Agreement |
| Dec 23, 2010 Reel 25562, frame 245 | Lyondellbasell Flavors & Fragrances, LLC | Wells Fargo Bank, National Association, as Administrative Agent | Security Agreement |
| Dec 23, 2010 Reel 25563, frame 397 | Deutsche Bank Trust Company Americas, as Collateral Agent | Lyondellbasell Flavors & Fragrances, LLC | Release of Security Interest |
| Dec 23, 2010 Reel 25563, frame 717 | Citibank, N.A., as Administrative Agent | Lyondellbasell Flavors & Fragrances, LLC | Release of Security Interest |
| Dec 23, 2010 Reel 25563, frame 777 | UBS AG, Stamford Branch, as Collateral Agent | Lyondellbasell Flavors & Fragrances, LLC | Release of Security Interest |
| Dec 23, 2010 Reel 25563, frame 798 | Wells Fargo Bank, National Association, as Collateral Agent | Lyondellbasell Flavors & Fragrances, LLC | Release of Security Interest |
| Jan 11, 2011 Reel 25619, frame 24 | Millennium Specialty Chemicals Inc. | Lyondellbasell Flavors & Fragrances, LLC | Assignment of Assignor's Interest |
| May 9, 2011 Reel 26246, frame 863 | Lyondellbasell Flavors & Fragrances, LLC | Renessenz, LLC | Change of Name |
| Feb 1, 2016 Reel 37631, frame 376 | Wells Fargo Bank, National Association | Pinova Holdings, Inc.; Renessenz LLC | Release of Security Interest |
| Feb 1, 2016 reel/frame not recorded | Wells Fargo Bank, National Association | Pinova Holdings, Inc. | Release of Security Interest |
| Feb 1, 2016 reel/frame not recorded | Wells Fargo Bank, National Association | Renessenz 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
Feb 2028
Term ends Feb 2, 2028. No further fees fall due before then
Note
The 512 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
2
later US patents cite this one
That is below the median of utility patents granted in 2010 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.