Lapsed Dec 8, 2023 on the fee record · High confidence
20-year base term ended Jul 25, 2025
Second maintenance fee unpaid; grace period ended.
Held by AMS Sensors Singapore Pte. Ltd.
Filed Jan 22, 2014 as application 14/161,053 · Granted Dec 8, 2015
Base term, 20 years from filing, plus 121 days of patent term adjustment (USPTO delay)
Today
Lapsed Dec 8, 2023
2005
2026
Clock starts
Jul 25, 2005
Jul 25, 2005
No longer in force
Dec 8, 2023
Dec 8, 2023
Granted
Dec 8, 2015
Dec 8, 2015
Term would have run to
Nov 23, 2025
Nov 23, 2025
base term
patent term adjustment
after the term ends
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
121
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 2
Maintenance fees paid
Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. This counts the ones the record shows paid.
4
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
Its term would have run to Nov 23, 2025: its 20-year base term plus 121 days of term adjustment for prosecution delay. 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, 2005, when application PCT/CH2005/000436, the earliest non-provisional in its chain, was filed (this one was filed Jan 22, 2014) | Jul 25, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +121 days, USPTO patent term adjustment record | Nov 23, 2025 | 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 2 maintenance fees paid | lapsed Dec 8, 2023 | High confidence |
| Computed term end | The steps above, in order | Dec 8, 2023 | High confidence |
This family
| US 7,897,928 | In force Dec 2026 | Dec 2026 |
| Application 12/987,669 | Abandoned not computed | not computed |
| US 9,209,327 | this patent Dec 2023 | Dec 2023 |
3 of 4 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 |
|---|---|---|---|
| Oct 28, 2015 Reel 36902, frame 693 | Csem Centre Suisse d'Electronique et de Microtechnique S.A. | Mesa Imaging AG | Assignment of Assignor's Interest |
| Oct 28, 2015 Reel 36902, frame 770 | Mesa Imaging AG | Heptagon Micro Optics Pte. Ltd. | Assignment of Assignor's Interest |
| Oct 28, 2015 Reel 36903, frame 508 | Kaufmann, Rolf; Oggier, Thierry; Neukom, Simon; Lehmann, Michael | Csem Centre Suisse d'Electronique et de Microtechnique S.A. | Assignment of Assignor's Interest |
| Dec 4, 2015 Reel 37211, frame 220 | Mesa Imaging AG | Heptagon Micro Optics Pte. Ltd. | Assignment of Assignor's Interest |
| Mar 6, 2019 Reel 48513, frame 922 | Heptagon Micro Optics Pte. Ltd. | AMS Sensors Singapore Pte. Ltd. | 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
Note
The 121 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
16
later US patents cite this one
That is above the median 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.