Term ends Jul 13, 2031 · High confidence
20-year base term ends Mar 25, 2029
Held by Orthosoft, Inc.
Filed Mar 25, 2009 as application 12/410,884 · Granted Sep 11, 2012
Base term plus 840 days of patent term adjustment (USPTO delay)
Today
2009
2031
Clock starts
Mar 25, 2009
Mar 25, 2009
Term ends
Jul 13, 2031
Jul 13, 2031
Granted
Sep 11, 2012
Sep 11, 2012
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
840
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.
7
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 840 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 Mar 25, 2009, when this application, 12/410,884, was filed | Mar 25, 2029 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +840 days, USPTO patent term adjustment record | Jul 13, 2031 | 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 | Jul 13, 2031 | High confidence |
This family
| US 8,265,790 | this patent Jul 2031 | Jul 2031 |
| US 9,144,470 | In force Nov 2031 | Nov 2031 |
| US 8,718,820 | Lapsed on the fee record May 2026 | May 2026 |
| US 9,495,509 | In force Mar 2030 | Mar 2030 |
| US 10,251,653 | In force Mar 2029 | Mar 2029 |
| US 11,224,443 | In force Mar 2029 | Mar 2029 |
| US 11,812,974 | In force Mar 2029 | Mar 2029 |
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 15, 2009 Reel 22688, frame 279 | Amiot, Louis-philippe; Boutin, Yannick; Breton, Yonik; Duval, Karine; Jansen, Herbert Andre; Pelletier, Benoit; Proulx, Catherine; Richard, Alain; Valin, Myriam; Zuhars, Joel | Orthosoft, Inc. | Assignment of Assignor's Interest |
| Oct 22, 2019 Reel 50791, frame 237 | Orthosoft Inc. | Orthosoft ULC | Continuance |
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
Jul 2031
Term ends Jul 13, 2031. No further fees fall due before then
Note
The 840 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
509
later US patents cite this one
That is top 1% 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.
In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.