Term ended Jan 17, 2026 · High confidence
20-year base term ended May 13, 2025
Held by Elementis SRL, Inc.
Filed Feb 22, 2010 as application 12/709,550 · Granted Feb 28, 2012
Base term plus 249 days of patent term adjustment (USPTO delay)
Today
Term ended Jan 17, 2026
2005
2026
Clock starts
May 13, 2005
May 13, 2005
Term ended
Jan 17, 2026
Jan 17, 2026
Granted
Feb 28, 2012
Feb 28, 2012
base term
patent term adjustment
after the term ends
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
249
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.
3
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 249 days past its 20-year base term on prosecution delay. All three maintenance fees were paid, so no fee lapse ended it. 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 May 13, 2005, when application 11/129,072, the earliest non-provisional in its chain, was filed (this one was filed Feb 22, 2010) | May 13, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +249 days, USPTO patent term adjustment record | Jan 17, 2026 | 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 | term ended | High confidence |
| Computed term end | The steps above, in order | Jan 17, 2026 | High confidence |
This family
| US 7,731,943 | In force Apr 2027 | Apr 2027 |
| Application PCT/US2005/018584 | PCT application no patent term | no patent term |
| US 8,124,059 | this patent Jan 2026 | Jan 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 22, 2010 Reel 23967, frame 441 | Harper, Thomas L.; Mehta, Shailesh; Rosenberg, Allan H. | Somerville Technology Group, Inc. D/B/A Summit Research Labs | Assignment of Assignor's Interest |
| Apr 19, 2010 Reel 24250, frame 385 | Patel, Suresh | Somerville Technology Group, Inc. D/B/A Summit Research Labs | Assignment of Assignor's Interest |
| Apr 29, 2010 Reel 24314, frame 66 | Somerville Technology Group, Inc. D/B/A Summit Research Labs | Summit Research Labs, Inc. | Corrective Assignment to Correct the Assignor: Patel, Suresh Assignee: Somerville Technology Group, Inc. D/B/A Summit Research Labs Previously Recorded on Reel 024250 Frame 0385. Assignor(S) Hereby Confirms the Assignor: Somerville Technology Group, Inc. D/B/A Summit Research Labs Assignee: Summit Research Labs, Inc. |
| Apr 1, 2013 Reel 30122, frame 898 | Summit Research Labs, Inc. | Citizens Bank of Pennsylvania, as Administrative Agent | Security Agreement |
| Apr 3, 2013 Reel 30140, frame 24 | Summit Research Labs, Inc. | MVC Capital, Inc., as Administrative Agent | Notice of Grant of Security Interest in Patents |
| Dec 1, 2014 Reel 34292, frame 791 | MVC Capital, Inc., as Administrative Agent | Summit Research Labs, Inc. | Release of Security Interest |
| Mar 27, 2017 Reel 41749, frame 683 | Citizens Bank of Pennsylvania, as Administrative Agent | Summit Research Labs, Inc. | Release of Security Interest |
| Jan 23, 2018 Reel 45129, frame 67 | Summit Research Labs, Inc. | Elementis SRL, Inc. | Change of Name |
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
Note
The 249 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
0
later US patents cite this one
That is below 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.