Proof Authentication Corporation

11 patents currently held · Updated Nov 14, 2026

Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.

Ending by 2030

Mar 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 Apr 27, 2027
The maintenance fee for System and method for analysis and authentication of covert security information using a smart device (US 9,171,347) comes due Apr 27, 2027. Unpaid by Oct 27, 2027, it lapses early.
1 fee due Aug 4, 2027
The maintenance fee for Authenticated barcode patterns (US 10,552,846) comes due Aug 4, 2027. Unpaid by Feb 4, 2028, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

1 term has ended 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.

Patent	Title	Status	Expires	Confidence
US 8,444,181	Single-color screen patterns for copy protection In force Term ends Mar 7, 2027 · From the USPTO record	In force	Term ends Mar 7, 2027	From the USPTO record
US 7,906,198	Document containing security images In force Term ends Mar 8, 2027 · From the USPTO record	In force	Term ends Mar 8, 2027	From the USPTO record
US 7,845,572	Solid-color embedded security feature In force Term ends Jul 24, 2028 · From the USPTO record	In force	Term ends Jul 24, 2028	From the USPTO record
US 7,976,068	Double-blind security features In force Term ends Dec 6, 2029 · From the USPTO record	In force	Term ends Dec 6, 2029	From the USPTO record
US 9,372,361	Polarization decoder In force Term ends Oct 30, 2032 · From the USPTO record	In force	Term ends Oct 30, 2032	From the USPTO record
US 10,552,846	Authenticated barcode patterns In force Term ends Mar 15, 2033 · From the USPTO record	In force	Term ends Mar 15, 2033	From the USPTO record
US 11,620,658	Authenticated Barcode Pattern In force Term ends Mar 15, 2033 · Medium confidence	In force	Term ends Mar 15, 2033	Medium confidence
US 9,171,347	System and method for analysis and authentication of covert security information using a smart device In force Term ends Nov 4, 2033 · From the USPTO record	In force	Term ends Nov 4, 2033	From the USPTO record
US 11,167,581	Authentication hologram In force Term ends Jul 25, 2039 · From the USPTO record	In force	Term ends Jul 25, 2039	From the USPTO record
US 12,659,414	Systems and Methods for the Generation and Usage of Authentication Images in Conjunction with Low-Resolution Print Devices In force Term ends Jul 18, 2044 · High confidence	In force	Term ends Jul 18, 2044	High confidence

10 of 11 patents shown.

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Pro members: see all 11 patents

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.

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Published applications

Every application published under this name has become a patent.