The Patent Finder

Aehr Test Systems

50 patents currently held · Updated Nov 14, 2026
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.

Recorded under 6 name spellings.

27
Ending by 2030
Dec 2027
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 Jan 21, 2027
    The maintenance fee for Adhesively Attached Stand-Offs On A Portable Pack For An Electronics Tester (US 9,086,449) comes due Jan 21, 2027. Unpaid by Jul 21, 2027, it lapses early.
  • 1 fee due Mar 3, 2027
    The maintenance fee for Limiting Translation for Consistent Substrate-To-Substrate Contact (US 10,401,385) comes due Mar 3, 2027. Unpaid by Sep 3, 2027, it lapses early.
  • 3 fees due May 5 to 26, 2027 · next May 5
  • 1 fee due Jun 5, 2027
    The maintenance fee for Electronics Tester (US 11,835,575) comes due Jun 5, 2027. Unpaid by Dec 6, 2027, it lapses early.
  • 1 fee due Aug 2, 2027
    The maintenance fee for System for Testing an Integrated Circuit of a Device and Its Method of Use (US 9,250,291) comes due Aug 2, 2027. Unpaid by Feb 2, 2028, it lapses early.
  • 1 fee due Sep 22, 2027
    The maintenance fee for Electronics Tester with a Valve Integrally Formed in a Component of a Portable Pack (US 9,291,668) comes due Sep 22, 2027. Unpaid by Mar 22, 2028, it lapses early.
  • 2 fees due Nov 7 to 12, 2027 · next Nov 7

Which patents, and when each one lapses · Pro

Recent changes

  • 3 of the patents on this record were 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 8,228,085System for Testing an Integrated Circuit of a Device and Its Method of Use
In force
 · High confidence
In forceHigh confidence
US 7,902,846Electronics Tester with a Signal Distribution Board and a Wafer Chuck Having Different Coefficients of Thermal Expansion
In force
 · High confidence
In forceHigh confidence
US 8,198,909Electronics Tester with a Signal Distribution Board and a Wafer Chuck Having Different Coefficients of Thermal Expansion
In force
 · High confidence
In forceHigh confidence
US 9,291,668Electronics Tester with a Valve Integrally Formed in a Component of a Portable Pack
In force
 · High confidence
In forceHigh confidence
US 9,500,702Electronics Tester with Hot Fluid Thermal Control
In force
 · High confidence
In forceHigh confidence
US 9,857,418Electronics Tester with Group and Individual Current Configurations
In force
 · High confidence
In forceHigh confidence
US 10,151,793Electronics Tester with Double-Spiral Thermal Control Passage in a Thermal Chuck
In force
 · High confidence
In forceHigh confidence
US 10,718,808Electronics Tester with Current Amplification
In force
 · High confidence
In forceHigh confidence
US 10,976,362Electronics Tester with Power Saving State
In force
 · High confidence
In forceHigh confidence
US 11,448,695System for Testing an Integrated Circuit of a Device and Its Method of Use
In force
 · High confidence
In forceHigh confidence
10 of 50 patents shown.
Pro members see all 50.
Pro members: see all 50 patents
Also on record, not counted in the 50: 44 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.

11 pending

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