The Patent Finder

Guardtime S.A.

35 patents currently held · Updated Nov 14, 2026
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
1
Ending by 2030
Oct 2028
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 24, 2027
    The maintenance fee for Verification lineage tracking and transfer control of data sets (US 10,425,428) comes due Mar 24, 2027. Unpaid by Sep 24, 2027, it lapses early.
  • 1 fee due Apr 15, 2027
    The maintenance fee for Event verification receipt system and methods (US 10,447,480) comes due Apr 15, 2027. Unpaid by Oct 15, 2027, it lapses early.
  • 1 fee due May 3, 2027
    The maintenance fee for Non-deterministic time systems and methods (US 9,178,708) comes due May 3, 2027. Unpaid by Nov 3, 2027, it lapses early.
  • 1 fee due Jun 17, 2027
    The maintenance fee for System and method for generating one-time data signatures (US 10,511,447) comes due Jun 17, 2027. Unpaid by Dec 17, 2027, it lapses early.
  • 1 fee due Aug 23, 2027
    The maintenance fee for System and method for field-verifiable record authentication (US 9,268,969) comes due Aug 23, 2027. Unpaid by Feb 23, 2028, it lapses early.
  • 3 fees due Oct 16 to 28, 2027 · next Oct 16

Which patents, and when each one lapses · Pro

Recent changes

Nothing was recorded against this company's patents in the last 90 days.

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 7,698,557System and method for generating a digital certificate
In force
 · From the USPTO record
In forceFrom the USPTO record
US 8,874,921System and method for generating keyless digital multi-signatures
In force
 · From the USPTO record
In forceFrom the USPTO record
US 9,853,819Blockchain-supported, node ID-augmented digital record signature method
In force
 · From the USPTO record
In forceFrom the USPTO record
US 10,200,199Strengthened entity identity for digital record signature infrastructure
In force
 · From the USPTO record
In forceFrom the USPTO record
US 9,268,969System and method for field-verifiable record authentication
In force (reinstated)
 · From the USPTO record
In force (reinstated)From the USPTO record
US 9,473,306Document verification with ID augmentation
In force
 · From the USPTO record
In forceFrom the USPTO record
US 9,178,708Non-deterministic time systems and methods
In force (reinstated)
 · From the USPTO record
In force (reinstated)From the USPTO record
US 9,473,510System and method for location verification
In force
 · From the USPTO record
In forceFrom the USPTO record
US 9,911,007Redundant fail-safe synchronization in a data authentication infrastructure
In force
 · From the USPTO record
In forceFrom the USPTO record
US 10,103,893Blockchain-supported, fail-safe synchronization in a data authentication infrastructure
In force
 · From the USPTO record
In forceFrom the USPTO record
10 of 35 patents shown.
Pro members see all 35.
Pro members: see all 35 patents
Also on record, not counted in the 35: 6 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.

5 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