Method of Treatment Using Substituted Pyrazolo[1,5-a] Pyrimidine Compounds

US 11,267,818 Lapsed on the fee record

Overview Sources & methods

Lapsed Mar 8, 2026 on the fee record · High confidence

Computed 20-year base term

First maintenance fee unpaid; grace period ended.

Held by Array Biopharma Inc.

Filed Sep 14, 2020 as application 17/020,461 · Granted Mar 8, 2022

Base term, 20 years from filing

Today

Lapsed Mar 8, 2026

2009 2029

Clock starts
Oct 21, 2009

No longer in force
Mar 8, 2026

Granted
Mar 8, 2022

Term would have run to
Oct 21, 2029

base term after the term ends 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

None

Term adjustment

No prosecution delay on this record.

None

Terminal disclaimer

No disclaimer on this record.

0 of 1

Maintenance fees paid

One maintenance fee can end this term early, the one due 3.5 years from grant; the next one's grace period runs past the term end. This counts it if the record shows it 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 Oct 21, 2009, when the earliest non-provisional application in its chain was filed (this one was filed Sep 14, 2020)	Oct 21, 2029	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	None on record	no cap applied	High confidence
Patent term extension	None on file	no change	High confidence
Fee events	0 of 1 maintenance fees paid	lapsed Mar 8, 2026	High confidence
Computed term end	The steps above, in order	Mar 8, 2026	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.

Method of Treatment Using Substituted Pyrazolo[1,5-a] Pyrimidine Compounds

Lapsed Mar 8, 2026 on the fee record · High confidence

20-year base term ends Oct 21, 2029

How we calculated this date

Sources