Term ends Apr 24, 2034 · High confidence
20-year base term ends Jul 1, 2033
Held by Tokyo Electron Limited
Filed Jul 1, 2013 as application 13/932,154 · Granted Dec 8, 2015
Base term plus 297 days of patent term adjustment (USPTO delay)
Today
2013
2034
Clock starts
Jul 1, 2013
Jul 1, 2013
Term ends
Apr 24, 2034
Apr 24, 2034
Granted
Dec 8, 2015
Dec 8, 2015
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
297
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
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.
52
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 297 days past its 20-year base term on prosecution delay. 2 of 3 maintenance fees are 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 1, 2013, when this application, 13/932,154, was filed | Jul 1, 2033 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +297 days, USPTO patent term adjustment record | Apr 24, 2034 | 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 | 2 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Apr 24, 2034 | High confidence |
This family
| Application 61/758,466 | Provisional application no patent term | no patent term |
| Application 61/758,471 | Provisional application no patent term | no patent term |
| Application 61/783,597 | Provisional application no patent term | no patent term |
| US 8,962,495 | Lapsed on the fee record Feb 2023 | Feb 2023 |
| US 9,111,747 | In force Jun 2033 | Jun 2033 |
| US 9,209,011 | this patent Apr 2034 | Apr 2034 |
| Application 13/934,677 | Abandoned not computed | not computed |
| US 8,871,654 | In force Jul 2033 | Jul 2033 |
8 of 52 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 |
|---|---|---|---|
| Jul 2, 2013 Reel 30726, frame 979 | Kato, Hitoshi; Miura, Shigehiro | Tokyo Electron Limited | 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
Apr 2034
Term ends Apr 24, 2034. Maintenance fees still fall due before then
Note
The 297 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
26
later US patents cite this one
That is top 25% of utility patents granted in 2015 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.