Ocean Power Technologies, Inc.
1 more in force is now held by another company
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
Recorded under 3 name spellings.
6
Ending by 2030
Dec 2026
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 Feb 25, 2027The maintenance fee for Wave energy converter with rotary hydraulic spring (US 9,115,686) comes due Feb 25, 2027. Unpaid by Aug 25, 2027, it lapses early.
- 1 fee due Jun 29, 2027The maintenance fee for Mooring anchor system for wave energy converters (WECS) (US 9,222,458) comes due Jun 29, 2027. Unpaid by Dec 29, 2027, it lapses early.
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 7,443,046 | Wave energy converter utilizing internal reaction mass and spring In force · From the USPTO record | In force | From the USPTO record | |
| US 7,878,734 | Heave plate with improved characteristics In force · From the USPTO record | In force | From the USPTO record | |
| US 7,594,780 | Damping plates In force · From the USPTO record | In force | From the USPTO record | |
| US 8,067,849 | Wave energy converter with internal mass on spring oscillator In force (reinstated) · From the USPTO record | In force (reinstated) | From the USPTO record | |
| US 7,965,980 | Cell buoy system In force · From the USPTO record | In force | From the USPTO record | |
| US 7,877,994 | Wave energy converter (WEC) with heave plates In force · From the USPTO record | In force | From the USPTO record | |
| US 8,763,389 | Reaction mass and spring oscillator for wave energy converter In force · From the USPTO record | In force | From the USPTO record | |
| US 8,723,355 | Autonomously operated buoys with power generation and power usage control In force · From the USPTO record | In force | From the USPTO record | |
| US 8,869,524 | Ball and socket power cable connector In force · From the USPTO record | In force | From the USPTO record | |
| US 9,115,686 | Wave energy converter with rotary hydraulic spring In force · From the USPTO record | In force | From the USPTO record |
Also on record, not counted in the 18: 1 patent in force now held by others · 20 lapsed for an unpaid fee · 32 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.
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.
1 no status recorded