Nine patents currently held, every record listed here

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

2 more records may belong here and await a decision; they are not counted.

The next term ends in Feb 2027. from the record

Free plan: 3 watched companies. Pro: unlimited.

Alerts on its grants, lapses and transfers.

Ending by 2030

Feb 2027

Next term end

Patent families

When these terms end

Each bar runs from grant to computed term end. 2011 to 2036.

US 7,895,434 Method and System for Multiple Asymmetric Encryption of .zip Files Feb 18, 2027

US 9,129,130 Systems and Methods for Data Verification and Replay Prevention Aug 30, 2033

US 9,639,711 Systems and Methods for Data Verification and Replay Prevention Aug 30, 2033

US 10,015,150 Systems and Methods for Smartkey Information Management Oct 17, 2036

US 10,326,745 Systems and Methods for Smartkey Information Management Oct 17, 2036

US 10,630,658 Systems and Methods for Smartkey Information Management Oct 17, 2036

US 11,070,535 Systems and Methods for Smartkey Information Management Oct 17, 2036

US 11,647,007 Systems and Methods for Smartkey Information Management Oct 17, 2036

US 12,058,115 Systems and Methods for Smartkey Information Management Oct 17, 2036

20162021202620312036

Every computed term in this portfolio is shown above.Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know

Notable patents

Ranked by citations and family size, against patents of the same kind granted the same year. How we rank

Notable

Systems and Methods for Smartkey Information Management US 10,015,150

The most cited patent in this portfolio, cited by 48 later US patents, top 5% of utility patents granted in 2018 in our data. Protection runs to 2036.

Ends Oct 2036 · High confidence Also notable

Systems and Methods for Data Verification and Replay Prevention US 9,129,130

Cited by 46 later US patents, top 10% of utility patents granted in 2015 in our data, and renewed at every maintenance window due so far. Protection runs to 2033.

Ends Aug 2033 · High confidence Also notable

Method and System for Multiple Asymmetric Encryption of .zip Files US 7,895,434

The largest patent family in this portfolio, 50 related applications, renewed at 3 of 3 maintenance windows. Protection runs to 2027.

Ends Feb 2027 · High confidence

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 Dec 18, 2026
The maintenance fee for Systems and Methods for Smartkey Information Management (US 10,326,745) comes due Dec 18, 2026. Unpaid by Jun 21, 2027, it lapses early.
1 fee due Mar 8, 2027
The maintenance fee for Systems and Methods for Data Verification and Replay Prevention (US 9,129,130) comes due Mar 8, 2027. Unpaid by Sep 8, 2027, it lapses early.
1 fee due Oct 21, 2027
The maintenance fee for Systems and Methods for Smartkey Information Management (US 10,630,658) comes due Oct 21, 2027. Unpaid by Apr 21, 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.

What they patent

Grouped by real patent family, largest first, labeled by the earliest filing in each. No technology classification is inferred from titles.

Systems and Methods for Smartkey Information Management	6 in force	to Oct 2036
Systems and Methods for Data Verification and Replay Prevention	2 in force	to Aug 2033
Method and System for Multiple Asymmetric Encryption of .zip Files	1 in force	to Feb 2027

Patents held now

Soonest term end first.

Showing 1 to 9 of 9

Patent	Title	Status	Expires	Confidence
US 7,895,434	Method and System for Multiple Asymmetric Encryption of .zip Files In force Term ends Feb 18, 2027 · High confidence	In force	Term ends Feb 18, 2027	High confidence
US 9,129,130	Systems and Methods for Data Verification and Replay Prevention In force Term ends Aug 30, 2033 · High confidence	In force	Term ends Aug 30, 2033	High confidence
US 9,639,711	Systems and Methods for Data Verification and Replay Prevention In force Term ends Aug 30, 2033 · High confidence	In force	Term ends Aug 30, 2033	High confidence
US 10,015,150	Systems and Methods for Smartkey Information Management In force Term ends Oct 17, 2036 · High confidence	In force	Term ends Oct 17, 2036	High confidence
US 10,326,745	Systems and Methods for Smartkey Information Management In force Term ends Oct 17, 2036 · High confidence	In force	Term ends Oct 17, 2036	High confidence
US 10,630,658	Systems and Methods for Smartkey Information Management In force Term ends Oct 17, 2036 · High confidence	In force	Term ends Oct 17, 2036	High confidence
US 11,070,535	Systems and Methods for Smartkey Information Management In force Term ends Oct 17, 2036 · High confidence	In force	Term ends Oct 17, 2036	High confidence
US 11,647,007	Systems and Methods for Smartkey Information Management In force Term ends Oct 17, 2036 · Low confidence	In force	Term ends Oct 17, 2036	Low confidence
US 12,058,115	Systems and Methods for Smartkey Information Management In force Term ends Oct 17, 2036 · High confidence	In force	Term ends Oct 17, 2036	High confidence

Also on record, not counted in the 9: 16 patents ended · 36 applications abandoned. List them

Sources and methods

Compiled from USPTO application file histories, grants and recorded assignments, with the company's own names reviewed by hand. How this record was built

Portfolio grouped automatically from ownership conveyances to the names matched to this company, usually every name that begins with its own, so it counts patents an affiliate holds; each list row names the holder of record. Security interests are excluded and ambiguous records are not reviewed by hand.

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

Pkware, Inc.