Term ends Oct 27, 2039 · High confidence
20-year base term ends Jul 17, 2039
Filed Nov 29, 2021 as application 17/536,733 · Granted Jun 4, 2024
Base term plus 102 days of patent term adjustment (USPTO delay)
Today
2019
2039
Clock starts
Jul 17, 2019
Jul 17, 2019
Term ends
Oct 27, 2039
Oct 27, 2039
Granted
Jun 4, 2024
Jun 4, 2024
base term
patent term adjustment
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
102
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 11,189,464, to Oct 27, 2039. The term already ends on or before that date, so the cap shortened nothing.
0 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.
5
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 102 days past its 20-year base term on prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 0 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 17, 2019, when application 16/514,237, the earliest non-provisional in its chain, was filed (this one was filed Nov 29, 2021) | Jul 17, 2039 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +102 days, USPTO patent term adjustment record | Oct 27, 2039 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 11,189,464) | resolves to Oct 27, 2039, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 0 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Oct 27, 2039 | High confidence |
This family
| US 11,189,464 | In force Jan 2040 | Jan 2040 |
| US 11,049,692 | In force Jul 2039 | Jul 2039 |
| Application PCT/US2020/042329 | PCT application no patent term | no patent term |
| US 12,002,652 | this patent Oct 2039 | Oct 2039 |
| US 12,562,342 | In force Aug 2039 | Aug 2039 |
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 |
|---|---|---|---|
| Apr 19, 2022 Reel 59638, frame 656 | Savas, Stephen E.; Ma, Shawming | Mattson Technology, Inc. | Assignment of Assignor's Interest |
| Apr 19, 2022 Reel 59638, frame 670 | Mattson Technology, Inc. | Beijing e-Town Semiconductor Technology Co., Ltd.; Mattson Technology, Inc. | Assignment of Assignor's Interest |
| Apr 19, 2022 reel/frame not recorded | Mattson Technology, Inc. | Beijing e-Town Semiconductor Technology Co., Ltd. | Assignment of Assignor's Interest |
| Apr 19, 2022 reel/frame not recorded | Mattson Technology, Inc. | Mattson Technology, Inc. | 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
Oct 2039
Term ends Oct 27, 2039. Maintenance fees still fall due before then
Note
The 102 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 11,189,464, ends no earlier than this term, so it caps nothing.
Citations
3
later US patents cite this one
Fewer than half of the utility patents granted in 2024 in our data have been cited yet, so we show the count and do not rank on it.
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.