The Patent Finder
US

Biometric Monitoring Device with Contextually- or Environmentally-Dependent Display

US 8,784,271 In force
OverviewFamilyAssignmentsSources & methods

Term ends Sep 17, 2033 · High confidence

Held by Fitbit, Inc.
Filed Oct 3, 2013 as application 14/045,592 · Granted Jul 22, 2014
Base term, 20 years from filing
Today
20 years from filing
2013 2033
Clock starts
Sep 17, 2013
Term ends
Sep 17, 2033
Granted
Jul 22, 2014
base term 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.
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.
61
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. All three maintenance fees are recorded paid; no more fees are due. 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 17, 2013, when application 14/029,763, the earliest non-provisional in its chain, was filed (this one was filed Oct 3, 2013)Sep 17, 2033High 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 events3 of 3 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderSep 17, 2033High confidence

This family

US 8,954,135In force
Jun 2033
Jun 2033
Application 14/029,763Abandoned
not computed
not computed
US 8,784,271this patent
Sep 2033
Sep 2033
Application 14/045,563Abandoned
not computed
not computed
US 9,026,927In force
Sep 2033
Sep 2033
US 9,596,990In force
Jun 2033
Jun 2033
US 9,603,524In force
Jun 2033
Jun 2033
US 9,049,998In force
Jun 2033
Jun 2033
8 of 61 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
Nov 7, 2013
Reel 31560, frame 896
Brumback, Christine Boomer; Knight, David Wayne; Park, James; Axley, Andrew Cole; Yuen, Shelten Gee JaoFitbit, Inc.Assignment of Assignor's Interest
Aug 13, 2014
Reel 33532, frame 27
Fitbit, Inc.Morgan Stanley Senior Funding, Inc., as Collateral AgentSecurity Interest
Aug 15, 2014
Reel 33546, frame 670
Fitbit, Inc.Silicon Valley Bank, As Administrative AgentSecurity Interest
Dec 11, 2015
reel/frame not recorded
Morgan Stanley Senior Funding, Inc.Fitstar, Inc.Release of Security Interest in Patents
Dec 11, 2015
reel/frame not recorded
Morgan Stanley Senior Funding, Inc.Fitbit, Inc.Release of Security Interest in Patents
Dec 11, 2015
Reel 37269, frame 76
Morgan Stanley Senior Funding, Inc.Fitstar, Inc.; Fitbit, Inc.Release of Security Interest in Patents
Dec 15, 2015
reel/frame not recorded
Silicon Valley Bank, As Administrative AgentFitstar, Inc.Termination and Release of Security Interest in Patents
Dec 15, 2015
reel/frame not recorded
Silicon Valley Bank, As Administrative AgentFitbit, Inc.Termination and Release of Security Interest in Patents
Dec 15, 2015
Reel 37300, frame 497
Silicon Valley Bank, As Administrative AgentFitstar, Inc.; Fitbit, Inc.Termination and Release of Security Interest in Patents

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 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) Part of 137 Finder · © 2026 137 Finder LLC · Sources cited