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US

Disinfection System of Contact Lens

US 11,331,404 Lapsed on the fee record
OverviewFamilySources & methods

Lapsed May 17, 2026 on the fee record · Low confidence

First maintenance fee unpaid; grace period ended.

Filed May 13, 2020 as application 15/930,591 · Granted May 17, 2022
Base term, 20 years from filing
Today
Lapsed May 17, 2026
2009 2029
Clock starts
Jun 29, 2009
No longer in force
May 17, 2026
Granted
May 17, 2022
Term would have run to
Jun 29, 2029
base term after the term ends 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.
Unresolved
Terminal disclaimer
On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.
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.
7
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.

Its term would have run to Jun 29, 2029: its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. Confidence: Low. from the record

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.
StepInputDate after this stepConfidence
Base term, 20 years from filingClock starts Jun 29, 2009, when application PCT/JP2009/002993, the earliest non-provisional in its chain, was filed (this one was filed May 13, 2020); a parent in its chain could not be resolved (the next row)Jun 29, 2029High confidence
Continuity chainA parent in the chain could not be resolveddated from this application's own claimMedium confidence
Patent term adjustmentNone on fileno changeHigh confidence
Terminal disclaimer capDisclaimer on file (approved), reference document not resolvedno cap applied, and none guessedMedium confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events0 of 1 maintenance fees paidlapsed May 17, 2026High confidence
Computed term endThe steps above, in orderMay 17, 2026Low confidence

This family

US 9,427,488In force
Jul 2029
Jul 2029
US 10,137,218In force
no later than Jun 2029
no later than Jun 2029
Application 16/164,256Abandoned
not computed
not computed
US 11,331,404this patent
May 2026
May 2026
US 12,042,567In force
no later than Jun 2029
no later than Jun 2029
Application 18/740,072Abandoned
not computed
not computed
6 of 7 applications in this family shown, earliest filings first. The applications whose file history this site holds. The family may have others.

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.

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