Maintenance fees coming due

Pkware, Inc.

3 maintenance fees come due in the 12 months from Nov 14, 2026, the next on Dec 18, 2026. Unpaid by Jun 21, 2027, that one lapses early.

A maintenance fee does not end a patent on its due date. It falls due at 3.5, 7.5 and 11.5 years from grant, and the patent lapses only if the fee is still unpaid at the end of the six month grace period that follows.

Patent	Title	Holder	Status	Fee due	Lapses if unpaid	Expires	Confidence
US 10,326,745	Systems and Methods for Smartkey Information Management Pkware, Inc. In force Fee due Dec 18, 2026 Lapses if unpaid Jun 21, 2027 Term ends Oct 17, 2036 · High confidence	Pkware, Inc.	In force	Dec 18, 2026	Jun 21, 2027	Term ends Oct 17, 2036	High confidence
US 9,129,130	Systems and Methods for Data Verification and Replay Prevention Pkware, Inc. In force Fee due Mar 8, 2027 Lapses if unpaid Sep 8, 2027 Term ends Aug 30, 2033 · High confidence	Pkware, Inc.	In force	Mar 8, 2027	Sep 8, 2027	Term ends Aug 30, 2033	High confidence
US 10,630,658	Systems and Methods for Smartkey Information Management Pkware, Inc. In force Fee due Oct 21, 2027 Lapses if unpaid Apr 21, 2028 Term ends Oct 17, 2036 · High confidence	Pkware, Inc.	In force	Oct 21, 2027	Apr 21, 2028	Term ends Oct 17, 2036	High confidence

3 of 3 patents shown. Soonest fee due date first, then patent number.

Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.