Polysign, Inc.
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
0
Ending by 2030
Jan 2039
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 25, 2027The maintenance fee for Master key escrow process (US 11,711,213) comes due Jan 25, 2027. Unpaid by Jul 26, 2027, it lapses early.
- 1 fee due Sep 26, 2027The maintenance fee for Preventing a Transmission of an Incorrect Copy of a Record of Data to a Distributed Ledger System (US 11,940,987) comes due Sep 26, 2027. Unpaid by Mar 27, 2028, it lapses early.
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.
Showing 1 to 4 of 4
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 11,940,987 | Preventing a Transmission of an Incorrect Copy of a Record of Data to a Distributed Ledger System In force · Medium confidence | In force | Medium confidence | |
| US 12,166,896 | Preventing an incorrect transmission of a copy of a record of data to a distributed ledger system In force · From the USPTO record | In force | From the USPTO record | |
| US 12,095,897 | Preventing an Erroneous Transmission of a Copy of a Record of Data to a Distributed Ledger System In force · Low confidence | In force | Low confidence | |
| US 11,711,213 | Master key escrow process In force · From the USPTO record | In force | From the USPTO record |
Also on record, not counted in the 4: 3 lapsed for an unpaid fee. 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.
2 no status recorded