Pressure-based aircraft fuel capacity monitoring system and method

US RE43,732 In force

Overview Sources & methods

Term ends Jul 22, 2027 · From the USPTO record

Computed 20-year base term

Named at grant Innovative Solutions & Support, Inc. · find this owner

Filed Mar 9, 2011 as application 13/044,498 · Granted Oct 16, 2012

Base term plus 437 days of patent term adjustment (USPTO delay)

Today

20 years from filing

Term ends Jul 22, 2027

2006 2027

Clock starts
May 11, 2006

Term ends
Jul 22, 2027

Granted
Oct 16, 2012

base term patent term adjustment fee events 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

437

Days of term adjustment

Read from the original patent's USPTO patent term adjustment record, which governs a reissue. Not recalculated here.

None

Terminal disclaimer

No disclaimer on this record.

3 of 3

Maintenance fees paid

Three maintenance fees fall due, at 3.5, 7.5 and 11.5 years from the original patent's grant, which is not on record here. 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 May 11, 2006, when the earliest non-provisional application in its chain was filed (this one was filed Mar 9, 2011)	May 11, 2026	High confidence
Continuity chain	A reissue: its term follows the original patent's, with the original's term adjustment	follows the original patent	Medium confidence
Patent term adjustment	+437 days, the original patent's USPTO patent term adjustment record, which governs a reissue (35 U.S.C. 251). This reissue's own record carries none	Jul 22, 2027	Medium confidence
Terminal disclaimer cap	None on record	no cap applied	High confidence
Patent term extension	None on file	no change	High confidence
Fee events	3 of 3 maintenance fees paid	In force	High confidence
Computed term end	The steps above, in order	Jul 22, 2027	From the USPTO record

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.

Pressure-based aircraft fuel capacity monitoring system and method

Term ends Jul 22, 2027 · From the USPTO record

20-year base term ended May 11, 2026

How we calculated this date

Sources