Systems and Methods for State-Less Authentication

US RE46,513 Term ended

Term ended Nov 20, 2022 · Low confidence

Computed 20-year base term

Reissue of US 7,020,645, which was surrendered when this reissue was granted; its term and maintenance fees continue here.

Held by Alto Dynamics, LLC

Filed Feb 8, 2012 as application 13/369,112 · Granted Aug 15, 2017

Base term plus 580 days of patent term adjustment (USPTO delay)

Today

20 years from filing

Term ended Nov 20, 2022

2001 2026

Clock starts
Apr 19, 2001

Term ended
Nov 20, 2022

Granted
Aug 15, 2017

base term patent term adjustment after the term ends 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

580

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 (Mar 28, 2006). 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 19, 2001, when the earliest non-provisional application in its chain was filed (this one was filed Feb 8, 2012)	Apr 19, 2021	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	+580 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	Nov 20, 2022	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	term ended	High confidence
Computed term end	The steps above, in order	Nov 20, 2022	Low 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.

Systems and Methods for State-Less Authentication

Term ended Nov 20, 2022 · Low confidence

20-year base term ended Apr 19, 2021

How we calculated this date

Sources