Knowledge archival and recollection systems and methods

US RE46,881 Lapsed on the fee record

Overview Sources & methods

Lapsed Sep 21, 2022 on the fee record · From the USPTO record

Computed 20-year base term

Third maintenance fee unpaid; grace period ended.

Named at grant AppliedEA, Inc. · find this owner

Filed Aug 4, 2012 as application 13/567,040 · Granted May 29, 2018

Base term, 20 years from filing, plus 815 days of patent term adjustment (USPTO delay)

Today

Lapsed Sep 21, 2022

2004 2026

Clock starts
Apr 5, 2004

No longer in force
Sep 21, 2022

Granted
May 29, 2018

Term would have run to
Jun 29, 2026

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

815

Days of term adjustment

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

Unresolved

Terminal disclaimer

On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.

2 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 Apr 5, 2004, when the earliest non-provisional application in its chain was filed (this one was filed Aug 4, 2012)	Apr 5, 2024	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	+815 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	Jun 29, 2026	Medium confidence
Terminal disclaimer cap	Disclaimer on file (approved), reference document not resolved	no cap applied, and none guessed	Medium confidence
Patent term extension	None on file	no change	High confidence
Fee events	2 of 3 maintenance fees paid	lapsed Sep 21, 2022	High confidence
Computed term end	The steps above, in order	Sep 21, 2022	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.

Knowledge archival and recollection systems and methods

Lapsed Sep 21, 2022 on the fee record · From the USPTO record

20-year base term ended Apr 5, 2024

How we calculated this date

Sources