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Laser System and Method for Astigmatic Corrections in Association with Cataract Treatment

US 11,224,541 In force, term unresolved
OverviewFamilyAssignmentsSources & methods
Collateral for a security interest recorded Aug 11, 2026 (Salem Five Cents Savings Bank).

Term ends no later than Jul 7, 2030 · Low confidence

In force on USPTO's status record and by its fee record. A terminal disclaimer on file may shorten this term, possibly to a date already past; its reference document is unresolved, so the date above is an upper bound and no earlier date is guessed.

Held by Lensar, Inc.
Filed May 19, 2017 as application 15/599,690 · Granted Jan 18, 2022
Base term, 20 years from filing
Today
20 years from filing
2010 2030
Clock starts
Jul 7, 2010
Ends no later than
Jul 7, 2030
Granted
Jan 18, 2022
base term 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
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.
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.
6
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.

This patent's term is 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. 1 of 2 maintenance fees is paid so far. 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 Jul 7, 2010, when application 12/831,859, the earliest non-provisional in its chain, was filed (this one was filed May 19, 2017); a parent in its chain could not be resolved (the next row)Jul 7, 2030High 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 events1 of 2 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderno later than Jul 7, 2030Low confidence

This family

US 8,617,146In force
Mar 2031
Mar 2031
US 9,655,781In force
Mar 2031
Mar 2031
US 11,224,541this patent
no later than Jul 2030
no later than Jul 2030
Application 16/442,458Abandoned
not computed
not computed
US 11,717,444In force
no later than Jul 2030
no later than Jul 2030
US 12,440,380In force
Jul 2030
Jul 2030
The applications whose file history this site holds. The family may have others.

Assignments

Assignment documents as recorded at the USPTO, oldest first, with the reel and frame each was recorded at. A recorded assignment is a filed document, not a statement of current ownership, and the absence of a later one is not evidence that the last one still stands.
RecordedAssignorAssigneeConveyance
May 18, 2021
Reel 56268, frame 884
Lensar, LLCLensar, Inc.Assignment of Assignor's Interest
Aug 11, 2026
Reel 76463, frame 914
Lensar, Inc.Salem Five Cents Savings BankSecurity Interest

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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