Term ends no later than Jan 9, 2027 · Medium confidence
20-year base term ended Nov 18, 2025
In force on USPTO's status record and by its fee record. A terminal disclaimer on file may shorten this term, possibly to a date already past; its reference document is unresolved, so the date above is an upper bound and no earlier date is guessed.
Held by Mirus LLC
Filed Nov 18, 2005 as application 11/282,461 · Granted Nov 18, 2008
Base term plus 417 days of patent term adjustment (USPTO delay)
Today
2005
2027
Clock starts
Nov 18, 2005
Nov 18, 2005
Ends no later than
Jan 9, 2027
Jan 9, 2027
Granted
Nov 18, 2008
Nov 18, 2008
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
417
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Unresolved
Terminal disclaimer
On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.
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.
12
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 417 days past its 20-year base term on prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. 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 Nov 18, 2005, when this application, 11/282,461, was filed | Nov 18, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +417 days, USPTO patent term adjustment record | Jan 9, 2027 | High confidence |
| Terminal disclaimer cap | Disclaimer on file (approved), reference document not resolved | no cap applied, and none guessed | Medium 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 | no later than Jan 9, 2027 | Medium confidence |
This family
| US 7,452,502 | this patent no later than Jan 2027 | no later than Jan 2027 |
| US 7,452,501 | In force no later than Jan 2027 | no later than Jan 2027 |
| US 7,488,444 | In force no later than Dec 2026 | no later than Dec 2026 |
| US 7,540,994 | In force no later than Jan 2027 | no later than Jan 2027 |
| US 7,540,995 | Term ended no later than Jul 2026 | no later than Jul 2026 |
| US 7,648,590 | Term ended no later than Nov 2025 | no later than Nov 2025 |
| US 7,648,592 | Term ended no later than Nov 2025 | no later than Nov 2025 |
| US 7,648,591 | Term ended no later than Nov 2025 | no later than Nov 2025 |
8 of 12 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 9, 2006 Reel 16997, frame 819 | Furst, Joseph G. | Icon Interventional Systems, Inc. | Assignment of Assignor's Interest |
| Mar 12, 2008 Reel 20637, frame 482 | Icon Interventional Systems, Inc. | Icon Medical Corp. | Assignment of Assignor's Interest |
| Nov 25, 2014 Reel 34263, frame 566 | Icon Interventional Systems, Inc. | Icon Medical Corp. | Assignment of Assignor's Interest |
| May 23, 2017 Reel 42481, frame 825 | Icon Medical Corp. | Mirus LLC | 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Jan 2027
Term ends no later than Jan 9, 2027. No further fees fall due before then
Note
A terminal disclaimer is on file and its reference is not resolved. No cap is applied and none is guessed
Note
The 417 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Open question
A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than Jan 9, 2027. We will not guess the cap.
Citations
8
later US patents cite this one
That is below the median of utility patents granted in 2008 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
This computed term ends no later than the date shown; an unresolved terminal disclaimer may end it earlier. 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.