The Patent Finder

Fiske Software LLC

16 patents currently held · Updated Nov 14, 2026
5 more in force are now held by other companies
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.

Recorded under 3 name spellings.

1
Ending by 2030
Jul 2030
Next term end

When these terms end

Held patents by the year their term ends
20262027202820292030203120322033203420352036203720382039204020412042204320442045

Fee deadlines

Maintenance fees fall due 3.5, 7.5 and 11.5 years after grant. A missed fee ends a patent at the end of the six month grace period that follows, not on the due date.
  • 1 fee due Mar 3, 2027
    The maintenance fee for Nado Cryptography Using One-Way Functions (US 10,403,173) comes due Mar 3, 2027. Unpaid by Sep 3, 2027, it lapses early.
  • 1 fee due May 14, 2027
    The maintenance fee for Protecting sensors and emitters (US 11,818,261) comes due May 14, 2027. Unpaid by Nov 15, 2027, it lapses early.
  • 1 fee due Jul 16, 2027
    The maintenance fee for NADO Cryptography with Key Generators (US 11,876,889) comes due Jul 16, 2027. Unpaid by Jan 18, 2028, it lapses early.
  • 1 fee due Sep 17, 2027
    The maintenance fee for Visual image authentication (US 10,592,651) comes due Sep 17, 2027. Unpaid by Mar 17, 2028, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

  • 1 of the patents on this record was granted since Aug 16, 2026

Patents held now

Soonest term end first. Each date below is computed on that patent's own page, which shows the rule, the adjustments and the fee history it was derived from.
PatentTitleStatus Expires Confidence
US 8,077,933Matching prints with feature collections
In force
 · From the USPTO record
In forceFrom the USPTO record
US 11,128,453Visual image authentication
In force
 · From the USPTO record
In forceFrom the USPTO record
US 11,693,944Visual Image Authentication
In force
 · Low confidence
In forceLow confidence
US 12,437,106Visual image authentication
In force
 · From the USPTO record
In forceFrom the USPTO record
US 10,592,651Visual image authentication
In force
 · From the USPTO record
In forceFrom the USPTO record
US 10,356,061Hiding A Public Key Exchange in Noise
In force
 · Medium confidence
In forceMedium confidence
US 10,360,395Hiding Information in Noise
In force
 · Medium confidence
In forceMedium confidence
US 11,171,934Dynamically Hiding Information in Noise
In force
 · Medium confidence
In forceMedium confidence
US 11,876,889NADO Cryptography with Key Generators
In force
 · High confidence
In forceHigh confidence
US 12,124,850Hiding Stable Machine Instructions in Noise
In force
 · Medium confidence
In forceMedium confidence
10 of 16 patents shown.
Pro members see all 16.
Pro members: see all 16 patents
Also on record, not counted in the 16: 5 patents in force now held by others · 1 lapsed for an unpaid fee · 3 ended at full term. List them

Sources and methods

Compiled from the USPTO record, grants, published applications and recorded assignments, not yet reviewed by hand. How this record was built
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.

Published applications

US patent applications published under this name that have not become patents. An application is published about eighteen months after its earliest filing; one that has not been published is in no public record.

1 no status recorded

List them

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