Systems and Methods for Improving Tolerance of Delay and Disruption of a Control-To-Data-Plane Interface in a Software-Defined Network

US 9,924,441 Surrendered on reissue

Overview Sources & methods

Surrendered on reissue Sep 2, 2025 · High confidence

Computed 20-year base term

Surrendered on reissue Sep 2, 2025 · its term and maintenance fees continue in US RE50,579 and US RE50,936.

Held by Aalyria Technologies, Inc.

Filed Mar 16, 2016 as application 15/071,969 · Granted Mar 20, 2018

Base term, 20 years from filing, plus 176 days of patent term adjustment (USPTO delay)

Today

Surrendered Sep 2, 2025

2016 2036

Clock starts
Mar 16, 2016

No longer in force
Sep 2, 2025

Granted
Mar 20, 2018

Term would have run to
Sep 8, 2036

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

176

Days of term adjustment

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

None

Terminal disclaimer

No disclaimer on this record.

1 of 3

Maintenance fees paid

Fees paid on this patent before its reissue. Those after fall due on the reissue, which carries the term on.

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 Mar 16, 2016, when this application, 15/071,969, was filed	Mar 16, 2036	High confidence
Continuity chain	Every parent in the chain resolved	no change	High confidence
Patent term adjustment	+176 days, USPTO patent term adjustment record	Sep 8, 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	no change	High confidence
Reissue	US RE50,579 and US RE50,936 issued Sep 2, 2025, and this patent's term continues in it (35 U.S.C. 251, 252)	surrendered Sep 2, 2025	High confidence
Surrendered on reissue	The steps above, in order	Sep 2, 2025	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.

Systems and Methods for Improving Tolerance of Delay and Disruption of a Control-To-Data-Plane Interface in a Software-Defined Network

Surrendered on reissue Sep 2, 2025 · High confidence

20-year base term ends Mar 16, 2036

How we calculated this date

Sources