Systems and Methods for Navigating Nodes in Channel Based Chatbots Using Natural Language Understanding

US 10,659,403 In force

Term ends Mar 25, 2036 · Medium confidence

Computed 20-year base term

Why Medium: The disclaimer's references carry disclaimers of their own not yet read (US 9,641,470), so the cap could be lower.

Held by Pypestream Inc.

Filed Mar 13, 2018 as application 15/919,987 · Granted May 19, 2020

Base term, 20 years from filing

Today

20 years from filing

Term ends Mar 25, 2036

2016 2036

Clock starts
Mar 25, 2016

Term ends
Mar 25, 2036

Granted
May 19, 2020

base term 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

None

Term adjustment

No prosecution delay on this record.

No effect

Terminal disclaimer

Resolved from the filed document, referencing US 10,187,337, US 9,450,901, US 9,641,470, US 9,647,968, to Mar 25, 2036. The term already ends on or before that date, so the cap shortened nothing.

1 of 3

Maintenance fees paid

Three maintenance fees fall due, at 3.5, 7.5 and 11.5 years from grant. 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 Mar 25, 2016, when the earliest non-provisional application in its chain was filed (this one was filed Mar 13, 2018)	Mar 25, 2036	High confidence
Continuity chain	Every parent in the chain resolved	no change	High confidence
Patent term adjustment	None on file	no change	High confidence
Terminal disclaimer cap	Disclaimer resolved from the filed document (refs US 10,187,337, US 9,450,901, US 9,641,470, US 9,647,968)	resolves to Mar 25, 2036, no earlier than this term, so no change	Medium confidence
Patent term extension	None on file	no change	High confidence
Fee events	1 of 3 maintenance fees paid	In force	High confidence
Computed term end	The steps above, in order	Mar 25, 2036	Medium 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.

In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.

Systems and Methods for Navigating Nodes in Channel Based Chatbots Using Natural Language Understanding

Term ends Mar 25, 2036 · Medium confidence

20-year base term ends Mar 25, 2036

How we calculated this date

Sources