Immunologically active polypeptides with altered toxicity useful for the preparation of an antipertussis vaccine

US 6,713,072 Lapsed on the fee record

Lapsed Mar 30, 2016 on the fee record · From the USPTO record

Computed 20-year base term

Third maintenance fee unpaid; grace period ended.

Named at grant Chiron S.r.l. · find this owner

Filed Jun 17, 1994 as application 08/261,668 · Granted Mar 30, 2004

Base term, 17 years from grant or 20 from filing, whichever is later, plus 217 days of patent term adjustment (USPTO delay)

Today

Lapsed Mar 30, 2016

1988 2026

Clock starts
Nov 1, 1988

No longer in force
Mar 30, 2016

Granted
Mar 30, 2004

Term would have run to
Nov 2, 2021

base term patent term adjustment after the term ends 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

217

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, the 1995 transition rule	Granted Mar 30, 2004 + 17 years, or clock starts Nov 1, 1988 + 20 years, whichever is later; a parent in its chain could not be resolved (the next row)	Mar 30, 2021	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	+217 days, USPTO patent term adjustment record	Nov 2, 2021	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 Mar 30, 2016	High confidence
Computed term end	The steps above, in order	Mar 30, 2016	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.

Immunologically active polypeptides with altered toxicity useful for the preparation of an antipertussis vaccine

Lapsed Mar 30, 2016 on the fee record · From the USPTO record

20-year base term ended Mar 30, 2021

How we calculated this date

Sources