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Apparatus and Method for Segmenting Edges for Optical Proximity Correction

US 8,122,389 Lapsed on the fee record
OverviewFamilyAssignmentsSources & methods

Lapsed Feb 21, 2024 on the fee record · High confidence

Third maintenance fee unpaid; grace period ended.

Filed Jan 20, 2010 as application 12/690,791 · Granted Feb 21, 2012
Base term, 20 years from filing
Today
Lapsed Feb 21, 2024
2005 2026
Clock starts
Aug 13, 2005
No longer in force
Feb 21, 2024
Granted
Feb 21, 2012
Term would have run to
Aug 13, 2025
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.
None
Terminal disclaimer
No disclaimer on this record.
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.
2
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 Aug 13, 2025: its 20-year base term, with no adjustment for prosecution delay. Confidence: High. 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 Aug 13, 2005, when application 11/203,498, the earliest non-provisional in its chain, was filed (this one was filed Jan 20, 2010)Aug 13, 2025High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustmentNone on fileno changeHigh confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events2 of 3 maintenance fees paidlapsed Feb 21, 2024High confidence
Computed term endThe steps above, in orderFeb 21, 2024High confidence

This family

US 7,743,358In force
no later than Jul 2028
no later than Jul 2028
US 8,122,389this patent
Feb 2024
Feb 2024
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
Mar 31, 2010
Reel 24169, frame 683
Sezginer, Abdurrahman; Yenikaya, Bayram; Huang, Hsu-tingInvarium, Inc.Assignment of Assignor's Interest
Apr 1, 2010
Reel 24177, frame 878
Invariurn, Inc.Cadence Design Systems, Inc.Assignment of Assignor's Interest
Apr 7, 2010
Reel 24199, frame 101
Invarium, Inc.Cadence Design Systems, Inc.Corrective Assignment to Correct the Conveying Party Data from Invariurn, Inc. to Invarium, Inc. Previously Recorded on Reel 024177 Frame 0878. Assignor(S) Hereby Confirms the Coversheet and Assignment Used for the Original Recordation Is Attached..

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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