Term ends Apr 16, 2027 · High confidence
20-year base term ends Apr 16, 2027
Held by Si Group, Inc.
Filed Jul 31, 2009 as application 12/534,019 · Granted May 24, 2011
Base term, 20 years from filing
Today
2007
2027
Clock starts
Apr 16, 2007
Apr 16, 2007
Term ends
Apr 16, 2027
Apr 16, 2027
Granted
May 24, 2011
May 24, 2011
base term
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
None
Term adjustment
No prosecution delay on this record.
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.
18
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 is its 20-year base term, with no adjustment for 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 Apr 16, 2007, when application 11/787,531, the earliest non-provisional in its chain, was filed (this one was filed Jul 31, 2009) | Apr 16, 2027 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | 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 16, 2027 | High confidence |
This family
| US 7,888,414 | In force Nov 2029 | Nov 2029 |
| Application PCT/US2007/009690 | PCT application no patent term | no patent term |
| US 8,178,005 | In force Aug 2027 | Aug 2027 |
| US 8,008,383 | In force Apr 2027 | Apr 2027 |
| US 7,947,769 | this patent Apr 2027 | Apr 2027 |
| US 8,008,384 | In force Apr 2027 | Apr 2027 |
| Application 12/534,043 | Abandoned not computed | not computed |
| US 8,183,311 | Lapsed on the fee record May 2024 | May 2024 |
8 of 18 applications in this family shown, earliest filings first. The applications whose file history this site holds. The family may have others.
Assignments
The 40 most recent of 104 recorded documents are shown; the 64 earliest are not. 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 11, 2017 Reel 42449, frame 1 | Bank Of America, N.a. | Chemtura Corporation; Biolab Franchise Company, LLC; Bio-Lab, Inc.; Crompton Colors Incorporated; Crompton Holding Corporation; GLCC Laurel, LLC; Great Lakes Chemical Corporation; Great Lakes Chemical Global, Inc.; GT Seed Treatment, Inc.; Homecare Labs, Inc.; Laurel Industries Holdings, Inc.; Recreational Water Products, Inc.; Weber City Road LLC | Release of Second Lien Intellectual Property Security Agreement |
| May 11, 2017 reel/frame not recorded | Bank Of America, N.a. | Chemtura Corporation | Release of First Lien Intellectual Property Security Agreement |
| May 11, 2017 reel/frame not recorded | Bank Of America, N.a. | Biolab Franchise Company, LLC | Release of First Lien Intellectual Property Security Agreement |
| May 11, 2017 reel/frame not recorded | Bank Of America, N.a. | Bio-Lab, Inc. | Release of First Lien Intellectual Property Security Agreement |
| May 11, 2017 reel/frame not recorded | Bank Of America, N.a. | Crompton Colors Incorporated | Release of First Lien Intellectual Property Security Agreement |
| May 11, 2017 reel/frame not recorded | Bank Of America, N.a. | Crompton Holding Corporation | Release of First Lien Intellectual Property Security Agreement |
| May 11, 2017 reel/frame not recorded | Bank Of America, N.a. | GLCC Laurel, LLC | Release of First Lien Intellectual Property Security Agreement |
| May 11, 2017 reel/frame not recorded | Bank Of America, N.a. | Great Lakes Chemical Corporation | Release of First Lien Intellectual Property Security Agreement |
| May 11, 2017 reel/frame not recorded | Bank Of America, N.a. | Great Lakes Chemical Global, Inc. | Release of First Lien Intellectual Property Security Agreement |
| May 11, 2017 reel/frame not recorded | Bank Of America, N.a. | GT Seed Treatment, Inc. | Release of First Lien Intellectual Property Security Agreement |
| May 11, 2017 reel/frame not recorded | Bank Of America, N.a. | Homecare Labs, Inc. | Release of First Lien Intellectual Property Security Agreement |
| May 11, 2017 reel/frame not recorded | Bank Of America, N.a. | Laurel Industries Holdings, Inc. | Release of First Lien Intellectual Property Security Agreement |
| May 11, 2017 reel/frame not recorded | Bank Of America, N.a. | Recreational Water Products, Inc. | Release of First Lien Intellectual Property Security Agreement |
| May 11, 2017 reel/frame not recorded | Bank Of America, N.a. | Weber City Road LLC | Release of First Lien Intellectual Property Security Agreement |
| May 11, 2017 reel/frame not recorded | Bank Of America, N.a. | Chemtura Corporation | Release of Second Lien Intellectual Property Security Agreement |
| May 11, 2017 reel/frame not recorded | Bank Of America, N.a. | Biolab Franchise Company, LLC | Release of Second Lien Intellectual Property Security Agreement |
| May 11, 2017 reel/frame not recorded | Bank Of America, N.a. | Bio-Lab, Inc. | Release of Second Lien Intellectual Property Security Agreement |
| May 11, 2017 reel/frame not recorded | Bank Of America, N.a. | Crompton Colors Incorporated | Release of Second Lien Intellectual Property Security Agreement |
| May 11, 2017 reel/frame not recorded | Bank Of America, N.a. | Crompton Holding Corporation | Release of Second Lien Intellectual Property Security Agreement |
| May 11, 2017 reel/frame not recorded | Bank Of America, N.a. | GLCC Laurel, LLC | Release of Second Lien Intellectual Property Security Agreement |
| May 11, 2017 reel/frame not recorded | Bank Of America, N.a. | Great Lakes Chemical Corporation | Release of Second Lien Intellectual Property Security Agreement |
| May 11, 2017 reel/frame not recorded | Bank Of America, N.a. | Great Lakes Chemical Global, Inc. | Release of Second Lien Intellectual Property Security Agreement |
| May 11, 2017 reel/frame not recorded | Bank Of America, N.a. | GT Seed Treatment, Inc. | Release of Second Lien Intellectual Property Security Agreement |
| May 11, 2017 reel/frame not recorded | Bank Of America, N.a. | Homecare Labs, Inc. | Release of Second Lien Intellectual Property Security Agreement |
| May 11, 2017 reel/frame not recorded | Bank Of America, N.a. | Laurel Industries Holdings, Inc. | Release of Second Lien Intellectual Property Security Agreement |
| May 11, 2017 reel/frame not recorded | Bank Of America, N.a. | Recreational Water Products, Inc. | Release of Second Lien Intellectual Property Security Agreement |
| May 11, 2017 reel/frame not recorded | Bank Of America, N.a. | Weber City Road LLC | Release of Second Lien Intellectual Property Security Agreement |
| Oct 16, 2018 Reel 47240, frame 580 | Wells Fargo Bank | Addivant USA, LLC | Release of Security Interest Recorded at Reel 030872 Frame 0810 |
| Oct 16, 2018 Reel 47775, frame 963 | Cerberus Business Finance, LLC | Addivant USA, LLC | Release of Security Interest Recorded at Reel 037207 Frame 0959 |
| Nov 16, 2018 Reel 48822, frame 965 | Si Group, Inc.; Addivant USA, LLC | JPMorgan Chase Bank, N.A., as Administrative Agent | Security Interest |
| Dec 2, 2019 Reel 51159, frame 77 | Addivant USA, LLC | Si Group USA (Usaa), LLC | Change of Name |
| Feb 16, 2023 Reel 62719, frame 326 | Si Group USA (Usaa), LLC | Si Group, Inc. | Merger |
| Sep 19, 2024 Reel 68968, frame 1 | Si Group, Inc. | JPMorgan Chase Bank, N.A., as Collateral Agent | Security Interest |
| Sep 19, 2024 Reel 68968, frame 24 | Si Group, Inc. | JPMorgan Chase Bank, N.A., as Administrative Agent | Security Interest |
| Nov 1, 2024 Reel 69290, frame 57 | JPMorgan Chase Bank, N.A., as Administrative Agent | Si Group, Inc.; Addivant USA, LLC; Si Group USA (Usaa), LLC (F/K/A Addivant USA, LLC) | Release of Security Interest |
| Nov 1, 2024 reel/frame not recorded | JPMorgan Chase Bank, N.A., as Administrative Agent | Si Group, Inc. | Release of Security Interest |
| Nov 1, 2024 reel/frame not recorded | JPMorgan Chase Bank, N.A., as Administrative Agent | Addivant USA, LLC | Release of Security Interest |
| Nov 1, 2024 reel/frame not recorded | JPMorgan Chase Bank, N.A., as Administrative Agent | Si Group USA (Usaa), LLC (F/K/A Addivant USA, LLC) | Release of Security Interest |
| Dec 24, 2024 Reel 69770, frame 736 | Jpmorgan Chase Bank, N.a. | Alter Domus (US) LLC | Assignment of Security Interest in Patents [reel 068968/FRAME 0001] |
| Dec 30, 2025 Reel 74136, frame 39 | Alter Domus (US) LLC, as Collateral Agent | Si Group, Inc. | 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.
What's changing
Apr 2027
Term ends Apr 16, 2027. No further fees fall due before then
Citations
11
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.