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Surgical Access System and Related Methods

US 8,403,841 Term ended
OverviewFamilyAssignmentsSources & methods
Collateral for a security interest recorded Nov 16, 2016 (Bank of America, N.A.).

Term ended Feb 15, 2024 · High confidence

USPTO later recorded it as expired for non-payment on Apr 28, 2025.

Filed Dec 14, 2009 as application 12/636,860 · Granted Mar 26, 2013
Base term plus 30 days of patent term adjustment (USPTO delay)
Today
20 years from filing
Term ended Feb 15, 2024
2004 2026
Clock starts
Jan 16, 2004
Term ended
Feb 15, 2024
Granted
Mar 26, 2013
base term patent term adjustment 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
30
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 8,114,019, to Feb 15, 2024. The term already ends on or before that date, so the cap shortened nothing.
2 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.
16
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 runs 30 days past its 20-year base term on prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 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 Jan 16, 2004, when application 10/759,811, the earliest non-provisional in its chain, was filed (this one was filed Dec 14, 2009)Jan 16, 2024High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+30 days, USPTO patent term adjustment recordFeb 15, 2024High confidence
Terminal disclaimer capDisclaimer resolved from the filed document (refs US 8,114,019)resolves to Feb 15, 2024, no earlier than this term, so no changeHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events2 of 2 maintenance fees paidterm endedHigh confidence
USPTO status recordRecorded as expired for non-payment on Apr 28, 2025, after the term endedno changeHigh confidence
Computed term endThe steps above, in orderFeb 15, 2024High confidence

This family

US 7,691,057In force
Dec 2026
Dec 2026
US 8,403,841this patent
Feb 2024
Feb 2024
US 8,133,173Term ended
Jun 2024
Jun 2024
US 8,114,019Term ended
Jun 2024
Jun 2024
US 8,172,750Term ended
Mar 2024
Mar 2024
US 8,439,832Term ended
Jan 2025
Jan 2025
US 8,343,046Term ended
Jan 2024
Jan 2024
US 8,523,768Term ended
Jan 2024
Jan 2024
8 of 16 applications in this family shown, earliest filings first. 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
Dec 14, 2009
Reel 23647, frame 714
Miles, Patrick; Martinelli, Scot; Finley, Eric; Gharib, James; Farquhar, Allen; Kaula, Norbert F.; Goretti Medeiros, Executor for Jeffrey J. Blewett (Deceased)NuVasive, Inc.Assignment of Assignor's Interest
Nov 16, 2016
Reel 40634, frame 404
NuVasive, Inc.; Impulse Monitoring, Inc.Bank of America, N.A., as Administrative AgentNotice of Grant of Security Interest in Patents
May 17, 2017
Reel 42490, frame 236
NuVasive, Inc.; Biotronic National, LLC; NuVasive Clinical Services Monitoring, Inc.; NuVasive Clinical Services, Inc.; NuVasive Specialized Orthopedics, Inc.Bank of America, N.A., as Administrative AgentNotice of Grant of Security Interest in Patents
Feb 28, 2020
Reel 52918, frame 595
NuVasive, Inc.; NuVasive Clinical Services Monitoring, Inc.; NuVasive Clinical Services, Inc.; NuVasive Specialized Orthopedics, Inc.Bank of America, N.A., as Administrative AgentSecurity 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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