The Patent Finder
US

Hepatitis C Virus Codon Optimized Non-Structural NS3/4A Fusion Gene

US 8,163,712 Lapsed on the fee record
OverviewSources & methods

Lapsed Apr 24, 2020 on the fee record · Medium confidence

Why Medium: The disclaimer's references carry disclaimers of their own not yet read (US 6,680,059, US 6,858,590, US 6,960,569), so the cap could be lower.

Second maintenance fee unpaid; grace period ended.

Held by Tripep AB
Filed Sep 29, 2010 as application 12/894,014 · Granted Apr 24, 2012
Base term, 20 years from filing · capped by a resolved terminal disclaimer
Today
Lapsed Apr 24, 2020
2001 2026
Clock starts
Aug 15, 2001
No longer in force
Apr 24, 2020
Granted
Apr 24, 2012
Term would have run to
Nov 3, 2020
base term 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
None
Term adjustment
No prosecution delay on this record.
Capped
Terminal disclaimer
Resolved from the filed document, referencing US 6,680,059, US 6,858,590, US 6,960,569, US 7,022,830, US 7,223,743, US 7,226,912, US 7,241,440, US 7,244,422, US 7,244,715, US 7,261,883, US 7,307,066, US 7,439,347, US 7,638,499, US 7,943,149, US 7,968,697.
1 of 2
Maintenance fees paid
Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. 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 filingClock starts Aug 15, 2001, when the earliest non-provisional application in its chain was filed (this one was filed Sep 29, 2010)Aug 15, 2021High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustmentNone on fileno changeHigh confidence
Terminal disclaimer capDisclaimer resolved from the filed document (refs US 6,680,059, US 6,858,590, US 6,960,569, US 7,022,830, US 7,223,743, US 7,226,912, US 7,241,440, US 7,244,422, US 7,244,715, US 7,261,883, US 7,307,066, US 7,439,347, US 7,638,499, US 7,943,149, US 7,968,697)capped to Nov 3, 2020Medium confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events1 of 2 maintenance fees paidlapsed Apr 24, 2020High confidence
Computed term endThe steps above, in orderApr 24, 2020Medium 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.

The Patent Finder CompaniesExpirationsCalculatorWatchlistPricing MethodologyCorrectionsLegalPrivacysupport@thepatentfinder.com Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) Part of 137 Finder · © 2026 137 Finder LLC · Sources cited