Synchronizing of animal oestrus and intra vaginal devices useful therein

US 6,663,608 Lapsed on the fee record

Overview Sources & methods

Lapsed Dec 16, 2015 on the fee record · From the USPTO record

Computed 20-year base term

Third maintenance fee unpaid; grace period ended.

Named at grant Interag · find this owner

Filed Oct 11, 2001 as application 09/973,901 · Granted Dec 16, 2003

Base term, 20 years from filing, plus 150 days of patent term adjustment (USPTO delay)

Today

Lapsed Dec 16, 2015

1997 2026

Clock starts
Apr 30, 1997

No longer in force
Dec 16, 2015

Granted
Dec 16, 2003

Term would have run to
Sep 27, 2017

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

150

Days of term adjustment

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

Unresolved

Terminal disclaimer

On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.

2 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 Apr 30, 1997, when the earliest non-provisional application in its chain was filed (this one was filed Oct 11, 2001); a parent in its chain could not be resolved (the next row)	Apr 30, 2017	High confidence
Continuity chain	A parent in the chain could not be resolved	dated from this application's own claim	Medium confidence
Patent term adjustment	+150 days, USPTO patent term adjustment record	Sep 27, 2017	High confidence
Terminal disclaimer cap	Disclaimer on file (approved), reference document not resolved	no cap applied, and none guessed	Medium confidence
Patent term extension	None on file	no change	High confidence
Fee events	2 of 3 maintenance fees paid	lapsed Dec 16, 2015	High confidence
Computed term end	The steps above, in order	Dec 16, 2015	From the USPTO record

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.

Synchronizing of animal oestrus and intra vaginal devices useful therein

Lapsed Dec 16, 2015 on the fee record · From the USPTO record

20-year base term ended Apr 30, 2017

How we calculated this date

Sources