Topaz Systems, Inc.

13 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 2 name spellings.

Ending by 2030

Feb 2027

Next term end

When these terms end

5 yrs10 yrs20 yrs

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 Aug 16, 2027
The maintenance fee for Overlay for electronic writing pad (US 9,262,004) comes due Aug 16, 2027. Unpaid by Feb 16, 2028, it lapses early.
1 fee due Sep 15, 2027
The maintenance fee for Signing ceremony system and method (US 9,286,596) comes due Sep 15, 2027. Unpaid by Mar 15, 2028, it lapses early.
1 fee due Oct 26, 2027
The maintenance fee for Digitizer (US 9,323,409) comes due Oct 26, 2027. Unpaid by Apr 26, 2028, it lapses early.
1 fee due Nov 3, 2027
The maintenance fee for Digitizer (US 9,329,720) comes due Nov 3, 2027. Unpaid by May 3, 2028, it lapses early.

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.

Patent	Title	Status	Expires	Confidence
US 7,933,840	Electronic signature security system In force Term ends Feb 15, 2027 · From the USPTO record	In force	Term ends Feb 15, 2027	From the USPTO record
US 7,876,930	Fingerprint reader combination In force Term ends Sep 11, 2029 · From the USPTO record	In force	Term ends Sep 11, 2029	From the USPTO record
US 9,722,799	Distributed system for multi-function secure verifiable signer authentication In force Ends no later than Mar 31, 2030 · From the USPTO record	In force	Ends no later than Mar 31, 2030	From the USPTO record
US 10,397,004	Distributed System for Multi-Function Secure Verifiable Signer Authentication In force Ends no later than Mar 31, 2030 · Low confidence	In force	Ends no later than Mar 31, 2030	Low confidence
US 9,286,596	Signing ceremony system and method In force Term ends Jul 24, 2031 · From the USPTO record	In force	Term ends Jul 24, 2031	From the USPTO record
US 8,959,353	Distributed system for multi-function secure verifiable signer authentication In force Term ends Feb 5, 2032 · From the USPTO record	In force	Term ends Feb 5, 2032	From the USPTO record
US 9,323,409	Digitizer In force Term ends Apr 6, 2032 · From the USPTO record	In force	Term ends Apr 6, 2032	From the USPTO record
US 9,329,720	Digitizer In force Term ends Apr 6, 2032 · From the USPTO record	In force	Term ends Apr 6, 2032	From the USPTO record
US 8,994,686	Digitizer In force Term ends May 13, 2032 · From the USPTO record	In force	Term ends May 13, 2032	From the USPTO record
US 8,952,926	Digitizer In force Term ends Jul 1, 2032 · From the USPTO record	In force	Term ends Jul 1, 2032	From the USPTO record

10 of 13 patents shown.

Pro members see all 13.

Pro members: see all 13 patents

Also on record, not counted in the 13: 9 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.

Export every term end as CSV · Pro

Published applications

Every application published under this name has become a patent.