Tools for Railway Traffic Control

US 9,403,545 Surrendered on reissue

Surrendered on reissue Feb 4, 2020 · High confidence

Computed 20-year base term

Surrendered on reissue Feb 4, 2020 · its term and maintenance fees continue in US RE47,835 and US RE49,115 and US RE51,084.

Held by Railware, Inc.

Filed Oct 21, 2014 as application 14/519,727 · Granted Aug 2, 2016

Base term, 20 years from filing, plus 64 days of patent term adjustment (USPTO delay)

Today

Surrendered Feb 4, 2020

2014 2034

Clock starts
Oct 21, 2014

No longer in force
Feb 4, 2020

Granted
Aug 2, 2016

Term would have run to
Dec 24, 2034

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

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 Oct 21, 2014, when this application, 14/519,727, was filed	Oct 21, 2034	High confidence
Continuity chain	Every parent in the chain resolved	no change	High confidence
Patent term adjustment	+64 days, USPTO patent term adjustment record	Dec 24, 2034	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 RE47,835 and US RE49,115 and US RE51,084 issued Feb 4, 2020, and this patent's term continues in it (35 U.S.C. 251, 252)	surrendered Feb 4, 2020	High confidence
Surrendered on reissue	The steps above, in order	Feb 4, 2020	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.

Tools for Railway Traffic Control

Surrendered on reissue Feb 4, 2020 · High confidence

20-year base term ends Oct 21, 2034

How we calculated this date

Sources