Spectroscopic Devices, Systems, and Methods for Optical Sensing of Molecular Species

US 11,953,434 In force

Term ends Mar 5, 2040 · High confidence

Computed 20-year base term

Filed Aug 20, 2021 as application 17/432,665 · Granted Apr 9, 2024

USPTO first gave this application the number US 11,898,956 and withdrew it before it issued. That number now leads here.

Base term plus 13 days of patent term adjustment (USPTO delay)

Today

20 years from filing

Term ends Mar 5, 2040

2020 2040

Clock starts
Feb 21, 2020

Term ends
Mar 5, 2040

Granted
Apr 9, 2024

base term 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

Days of term adjustment

Read from the USPTO patent term adjustment record, not recalculated here.

None

Terminal disclaimer

No disclaimer on this record.

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.

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 Feb 21, 2020, when the earliest non-provisional application in its chain was filed (this one was filed Aug 20, 2021)	Feb 21, 2040	High confidence
Continuity chain	Every parent in the chain resolved	no change	High confidence
Patent term adjustment	+13 days, USPTO patent term adjustment record	Mar 5, 2040	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	0 of 3 maintenance fees paid	In force	High confidence
Computed term end	The steps above, in order	Mar 5, 2040	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.

Spectroscopic Devices, Systems, and Methods for Optical Sensing of Molecular Species

Term ends Mar 5, 2040 · High confidence

20-year base term ends Feb 21, 2040

How we calculated this date

Sources