Observation Device

US 10,086,937 In force

Overview Sources & methods

Term ends Aug 17, 2036 · High confidence

Computed 20-year base term

Held by Denso Corporation; the University of Tokyo and The University of Tokyo

Filed Oct 28, 2015 as application 14/925,005 · Granted Oct 2, 2018

Base term plus 294 days of patent term adjustment (USPTO delay)

Today

20 years from filing

Term ends Aug 17, 2036

2015 2036

Clock starts
Oct 28, 2015

Term ends
Aug 17, 2036

Granted
Oct 2, 2018

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

294

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.

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 Oct 28, 2015, when this application, 14/925,005, was filed	Oct 28, 2035	High confidence
Continuity chain	Every parent in the chain resolved	no change	High confidence
Patent term adjustment	+294 days, USPTO patent term adjustment record	Aug 17, 2036	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	Aug 17, 2036	High confidence

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.

Not on this page: the patent's family, its recorded assignments and its citation count. USPTO's assignment records, linked above, list every recorded assignment.

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.

Observation Device

Term ends Aug 17, 2036 · High confidence

20-year base term ends Oct 28, 2035

How we calculated this date

Sources