Term ends Apr 1, 2027 · Medium confidence
20-year base term ended Dec 22, 2025
Why Medium: A parent in the chain could not be resolved.
Held by Arxium Inc.
Filed Feb 22, 2008 as application 12/035,850 · Granted Apr 26, 2011
Base term plus 465 days of patent term adjustment (USPTO delay)
Today
2005
2027
Clock starts
Dec 22, 2005
Dec 22, 2005
Term ends
Apr 1, 2027
Apr 1, 2027
Granted
Apr 26, 2011
Apr 26, 2011
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
465
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.
9
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 465 days past its 20-year base term on prosecution delay. All three maintenance fees are recorded paid; no more fees are due. 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 Dec 22, 2005, when application 11/316,795, the earliest non-provisional in its chain, was filed (this one was filed Feb 22, 2008); a parent in its chain could not be resolved (the next row) | Dec 22, 2025 | 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 | +465 days, USPTO patent term adjustment record | Apr 1, 2027 | 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 1, 2027 | Medium confidence |
This family
| US 7,610,115 | In force Apr 2028 | Apr 2028 |
| US 7,783,383 | In force Aug 2028 | Aug 2028 |
| US 8,267,129 | In force May 2031 | May 2031 |
| US 7,931,859 | this patent Apr 2027 | Apr 2027 |
| US 8,571,708 | Term ended Aug 2026 | Aug 2026 |
| US 7,930,066 | Term ended Dec 2025 | Dec 2025 |
| US 9,043,019 | Term ended Oct 2026 | Oct 2026 |
| US 8,182,744 | Term ended Dec 2025 | Dec 2025 |
8 of 9 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 |
|---|---|---|---|
| Jan 23, 2009 Reel 22149, frame 467 | Reinhardt, Alex H.; Mlodzinski, Lance R.; Eliuk, Walter W.; Rob, Ronald H.; Davidson, Robert Keith | Intelligent Hospital Systems Ltd. | Assignment of Assignor's Interest |
| Apr 23, 2014 Reel 32739, frame 203 | Intelligent Hospital Systems Ltd. | Intelligent Hospital Systems Inc. | Assignment of Assignor's Interest |
| Apr 1, 2015 Reel 35313, frame 124 | Intelligent Hospital Systems, Inc. | Callidus Capital Corporation | Security Interest |
| Feb 5, 2016 Reel 37732, frame 133 | Intelligent Hospital Systems Inc. | Arxium Inc. | Change of Name |
| Jun 3, 2016 Reel 38874, frame 743 | Intelligent Hospital Systems Inc. | Arxium Inc. | Corrective Assignment to Correct the Assignee Address Previously Recorded on Reel 037732 Frame 0133. Assignor(S) Hereby Confirms the Change of Name. |
| Dec 15, 2016 Reel 40993, frame 68 | Callidus Capital Corporation | Intelligent Hospital Systems, Inc. | Release of Security Interest |
| Jan 26, 2017 Reel 41088, frame 432 | Arxium Inc. | Royal Bank of Canada | Security Interest |
| May 22, 2020 Reel 52741, frame 463 | Royal Bank of Canada | Arxium, 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 1, 2027. No further fees fall due before then
Note
The 465 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
150
later US patents cite this one
That is top 5% 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.