Lapsed Aug 28, 2024 on the fee record · Medium confidence
20-year base term ends Feb 14, 2027
Why Medium: A parent in the chain could not be resolved.
Third maintenance fee unpaid; grace period ended.
Held by The Mathworks, Inc.
Filed Oct 20, 2008 as application 12/254,578 · Granted Aug 28, 2012
Base term, 20 years from filing, plus 977 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
Lapsed Aug 28, 2024
2007
2029
Clock starts
Feb 14, 2007
Feb 14, 2007
No longer in force
Aug 28, 2024
Aug 28, 2024
Granted
Aug 28, 2012
Aug 28, 2012
Term would have run to
Sep 5, 2029
Sep 5, 2029
base term
patent term adjustment
after the term ends
fee events
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
977
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Capped
Terminal disclaimer
Resolved from the filed document, referencing US 8,010,954, US 8,239,844, US 8,239,845.
2 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.
19
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
Its term would have run to Sep 5, 2029: its 20-year base term plus 977 days of term adjustment for prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. Confidence: Medium. 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 Feb 14, 2007, when application 11/706,805, the earliest non-provisional in its chain, was filed (this one was filed Oct 20, 2008); a parent in its chain could not be resolved (the next row) | Feb 14, 2027 | High confidence |
| Continuity chain | A parent in the chain could not be resolved | dated from this application's own claim | Medium confidence |
| Patent term adjustment | +977 days, USPTO patent term adjustment record | Oct 18, 2029 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 8,010,954, US 8,239,844, US 8,239,845) | capped to Sep 5, 2029 | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 2 of 3 maintenance fees paid | lapsed Aug 28, 2024 | High confidence |
| Computed term end | The steps above, in order | Aug 28, 2024 | Medium confidence |
This family
| US 8,010,954 | In force Mar 2030 | Mar 2030 |
| US 8,108,845 | In force Apr 2030 | Apr 2030 |
| Application 11/841,861 | Abandoned not computed | not computed |
| Application PCT/US2008/001921 | PCT application no patent term | no patent term |
| Application PCT/US2008/062162 | PCT application no patent term | no patent term |
| US 8,225,300 | In force Oct 2029 | Oct 2029 |
| US 8,239,844 | In force Sep 2029 | Sep 2029 |
| US 8,255,889 | this patent Aug 2024 | Aug 2024 |
8 of 19 applications in this family shown, earliest filings first. 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 20, 2008 Reel 21710, frame 257 | Stefansson, Halldor N.; Anderson, Penelope L.; Baker, Brett; Ellis, Edric; Hicklin, Joseph F.; Little, John N.; Martin, Jocelyn Luke; Luszczek, Piotr R.; Moulana, Nausheen B. | The Mathworks, Inc. | Assignment of Assignor's Interest |
| Aug 5, 2009 Reel 23054, frame 713 | Dean, Loren; Lurie, Roy E. | The Mathworks, Inc. | Assignment of Assignor's 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.
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Alerts on its grants, lapses and transfers.
What's changing
Note
The 977 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Disclaimer cap
This term is capped by a terminal disclaimer resolved from the filed document, referencing US 8,010,954, US 8,239,844, US 8,239,845.
Citations
37
later US patents cite this one
That is top 25% 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.