The Patent Finder
US

Systems and Methods for Calibrating Unstable Sensors

US 12,228,402 In force
OverviewFamilyAssignmentsSources & methods

Term ends Aug 31, 2037 · High confidence

Held by Nextnav, LLC
Filed Dec 14, 2023 as application 18/539,991 · Granted Feb 18, 2025
Base term, 20 years from filing
Today
20 years from filing
2017 2037
Clock starts
Aug 31, 2017
Term ends
Aug 31, 2037
Granted
Feb 18, 2025
base term 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.
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.
6
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. 0 of 3 maintenance fees are paid so far. 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 Aug 31, 2017, when application 15/692,142, the earliest non-provisional in its chain, was filed (this one was filed Dec 14, 2023)Aug 31, 2037High 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 events0 of 3 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderAug 31, 2037High confidence

This family

US 10,514,258In force
Feb 2038
Feb 2038
US 11,199,406In force
Aug 2037
Aug 2037
US 11,892,295In force
Aug 2037
Aug 2037
US 11,761,765In force
Aug 2037
Aug 2037
US 12,038,280In force
Aug 2037
Aug 2037
US 12,228,402this patent
Aug 2037
Aug 2037
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 15, 2023
Reel 65883, frame 944
Dormody, Michael; Pattabiraman, Ganesh; Kumar, Abijith; Wolf, Thomas; Parsons, Gary; Gates, Christian; Joseph, Deepak; Nagarajan, BadrinathNextnav, LLCAssignment of Assignor's Interest
Apr 1, 2025
Reel 70691, frame 909
Nextnav Inc.; Nextnav Holdings, LLC; Nextnav Intermediate Holdco, LLC; Progeny LMS, LLC; Commlabs, Inc.Glas Trust Company LLCSecurity Interest
Jul 24, 2026
Reel 76062, frame 701
Glas Trust Company LLCNextnav Inc.; Nextnav Holdings, LLC; Nextnav Intermediate Holdco, LLC; Progeny LMS, LLC; Commlabs, Inc.Release of Security 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 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