Term ends Jan 20, 2028 · High confidence
20-year base term ended Jul 25, 2026
Filed Feb 18, 2020 as application 16/793,962 · Granted May 9, 2023
Base term plus 544 days of patent term adjustment (USPTO delay)
Today
2006
2028
Clock starts
Jul 25, 2006
Jul 25, 2006
Term ends
Jan 20, 2028
Jan 20, 2028
Granted
May 9, 2023
May 9, 2023
base term
patent term adjustment
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
544
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
1 of 1
Maintenance fees paid
One maintenance fee can end this term early, the one due 3.5 years from grant; the next one's grace period runs past the term end. This counts it if the record shows it paid.
17
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 544 days past its 20-year base term on prosecution delay. 1 of 1 maintenance fees is paid so far. 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 Jul 25, 2006, when application PCT/CA2006/001225, the earliest non-provisional in its chain, was filed (this one was filed Feb 18, 2020) | Jul 25, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +544 days, USPTO patent term adjustment record | Jan 20, 2028 | 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 | 1 of 1 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Jan 20, 2028 | High confidence |
This family
| US 7,906,770 | In force Nov 2027 | Nov 2027 |
| US 7,880,154 | In force no later than Feb 2027 | no later than Feb 2027 |
| US 8,696,538 | In force Feb 2027 | Feb 2027 |
| US 9,050,459 | Term ended Jul 2026 | Jul 2026 |
| US 9,630,025 | Term ended Oct 2026 | Oct 2026 |
| US 9,687,677 | Term ended Jul 2026 | Jul 2026 |
| US 9,687,673 | Term ended Jul 2026 | Jul 2026 |
| US 9,687,678 | Term ended Jul 2026 | Jul 2026 |
8 of 17 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 |
|---|---|---|---|
| Mar 25, 2020 Reel 52228, frame 332 | Otto, Karl | Varian Medical Systems International AG | Assignment of Assignor's Interest |
| Jan 9, 2023 Reel 62320, frame 542 | Varian Medical Systems International AG | Siemens Healthineers International AG | 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
Jan 2028
Term ends Jan 20, 2028. No further fees fall due before then
Note
The 544 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
38
later US patents cite this one
That is top 5% of utility patents granted in 2023 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.