The Patent Finder
US

Cannulotome

US 9,049,986 Term ended
OverviewFamilyAssignmentsSources & methods

Term ended Jun 22, 2026 · High confidence

Filed Sep 20, 2011 as application 13/237,866 · Granted Jun 9, 2015
Base term, 20 years from filing · capped by a resolved terminal disclaimer
Today
20 years from filing
Term ended Jun 22, 2026
2011 2031
Clock starts
Sep 20, 2011
Term ended
Jun 22, 2026
Granted
Jun 9, 2015
base term after the term ends 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.
Capped
Terminal disclaimer
Resolved from the filed document, referencing US 8,647,257, US 9,402,711.
3 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.
5
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. All three maintenance fees were paid, so no fee lapse ended it. 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 Sep 20, 2011, when this application, 13/237,866, was filedSep 20, 2031High 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 8,647,257, US 9,402,711)capped to Jun 22, 2026High confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events3 of 3 maintenance fees paidterm endedHigh confidence
Computed term endThe steps above, in orderJun 22, 2026High confidence

This family

US 9,049,986this patent
Jun 2026
Jun 2026
US 8,647,257In force (reinstated)
Sep 2031
Sep 2031
Application 14/177,155Abandoned
not computed
not computed
Application 14/611,081Abandoned
not computed
not computed
Application 14/733,883Abandoned
not computed
not computed
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
Nov 21, 2013
Reel 31649, frame 576
Jansen, Lex P.; To, John; Davis, John; Kume, Stewart; Twardzik, WendySpine View, Inc.Assignment of Assignor's Interest
Jun 22, 2018
Reel 46413, frame 616
Spine View, Inc.Spine View (ABC) LLCAssignment of Assignor's Interest
Jun 22, 2018
Reel 46413, frame 737
Spine View (ABC) LLCExpanding Innovations, Inc.Assignment of Assignor's 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.

The Patent Finder CompaniesExpirationsCalculatorWatchlistPricing MethodologyCorrectionsLegalPrivacysupport@thepatentfinder.com Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) Part of 137 Finder · © 2026 137 Finder LLC · Sources cited