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Surgical Access System and Related Methods

US 8,550,994 Term ended
OverviewFamilyAssignmentsSources & methods
Collateral for a security interest recorded Nov 16, 2016 (Bank of America, N.A.).

Term ended Jan 16, 2024 · High confidence

USPTO later recorded it as expired for non-payment on Nov 10, 2025.

Filed Nov 5, 2012 as application 13/668,504 · Granted Oct 8, 2013
Base term, 20 years from filing · capped by a resolved terminal disclaimer
Today
20 years from filing
Term ended Jan 16, 2024
2004 2026
Clock starts
Feb 27, 2004
Term ended
Jan 16, 2024
Granted
Oct 8, 2013
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 7,819,801, US 8,303,498, US 8,696,559.
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.
8
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 resolved from the filed document caps it earlier. 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 Feb 27, 2004, when application 10/789,797, the earliest non-provisional in its chain, was filed (this one was filed Nov 5, 2012)Feb 27, 2024High 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 7,819,801, US 8,303,498, US 8,696,559)capped to Jan 16, 2024High 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 Nov 10, 2025, after the term endedno changeHigh confidence
Computed term endThe steps above, in orderJan 16, 2024High confidence

This family

US 7,819,801In force
Sep 2028
Sep 2028
US 7,892,173Term ended
Feb 2024
Feb 2024
US 8,303,498Term ended
Aug 2024
Aug 2024
US 8,550,994this patent
Jan 2024
Jan 2024
US 8,696,559Term ended
Jan 2024
Jan 2024
US 9,468,405Term ended
Jan 2025
Jan 2025
Application 15/284,797Abandoned
not computed
not computed
US 11,219,437Term ended
Jan 2025
Jan 2025
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
Jul 12, 2013
Reel 30789, frame 606
Miles, Patrick; Martinelli, Scot; Finley, Eric; Gharib, James; Farquhar, Allen; Kaula, Norbert F.; Blewett, Jeffrey J.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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