The Patent Finder
US

Syringe for Obtaining Nano-Sized Materials for Selective Assays and Related Methods of Use

US 9,834,809 Lapsed on the fee record
OverviewFamilyAssignmentsSources & methods

Lapsed Dec 5, 2021 on the fee record · High confidence

First maintenance fee unpaid; grace period ended.

Filed Feb 28, 2014 as application 14/193,007 · Granted Dec 5, 2017
Base term, 20 years from filing, plus 7 days of patent term adjustment (USPTO delay)
Today
Lapsed Dec 5, 2021
2014 2034
Clock starts
Feb 28, 2014
No longer in force
Dec 5, 2021
Granted
Dec 5, 2017
Term would have run to
Mar 7, 2034
base term after the term ends 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
7
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
0 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.
49
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 Mar 7, 2034: its 20-year base term plus 7 days of term 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 Feb 28, 2014, when this application, 14/193,007, was filedFeb 28, 2034High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+7 days, USPTO patent term adjustment recordMar 7, 2034High confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events0 of 3 maintenance fees paidlapsed Dec 5, 2021High confidence
Computed term endThe steps above, in orderDec 5, 2021High confidence

This family

US 9,067,811In force
no later than Jun 2033
no later than Jun 2033
US 9,834,809this patent
Dec 2021
Dec 2021
US 10,500,546Lapsed on the fee record
Dec 2023
Dec 2023
US 9,870,895In force
Jan 2035
Jan 2035
Application PCT/US2015/018114PCT application
no patent term
no patent term
US 9,844,757In force
Mar 2035
Mar 2035
Application 14/656,190Abandoned
not computed
not computed
Application 14/656,657Abandoned
not computed
not computed
8 of 49 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
Feb 28, 2014
Reel 32320, frame 436
Mountcastle, Paul D.; Foulke, Svetlana M.Lockheed Martin CorporationAssignment of Assignor's Interest
Feb 25, 2015
Reel 35029, frame 164
Mountcastle, Paul D.; Foulke, Svetlana M.Lockheed Martin CorporationAssignment 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