Welltec A/S
79 more in force are now held by other companies
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
Recorded under 4 name spellings.
5
Ending by 2030
Apr 2028
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.
- 2 fees due Dec 9 to 11, 2026 · next Dec 9
- 3 fees due Jan 2 to 14, 2027 · next Jan 2
- 1 fee due Mar 10, 2027The maintenance fee for Downhole flow device (US 10,408,017) comes due Mar 10, 2027. Unpaid by Sep 10, 2027, it lapses early.
- 1 fee due Apr 8, 2027The maintenance fee for Downhole stroking tool (US 10,435,977) comes due Apr 8, 2027. Unpaid by Oct 8, 2027, it lapses early.
- 1 fee due Jun 15, 2027The maintenance fee for Downhole tool head for releasing precipitated solids (US 9,212,529) comes due Jun 15, 2027. Unpaid by Dec 15, 2027, it lapses early.
- 2 fees due Jul 2 to 7, 2027 · next Jul 2
- 2 fees due Aug 11, 2027
- 1 fee due Sep 15, 2027The maintenance fee for Downhole tool for borehole cleaning or for moving fluid in a borehole (US 9,284,818) comes due Sep 15, 2027. Unpaid by Mar 15, 2028, it lapses early.
- 2 fees due Nov 3 to 5, 2027 · next Nov 3
Recent changes
- 1 of the patents on this record was granted 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 7,913,768 | Release Device In force · High confidence | In force | High confidence | |
| US 8,316,965 | Drilling Tool with Fluid Cleaner In force · High confidence | In force | High confidence | |
| US 8,230,914 | Anchor Tool In force · High confidence | In force | High confidence | |
| US 8,171,988 | Stroker Tool In force · High confidence | In force | High confidence | |
| US 7,946,358 | Sequence Valve and a Downhole Tractor In force · High confidence | In force | High confidence | |
| US 9,080,429 | Scanning tool In force · From the USPTO record | In force | From the USPTO record | |
| US 9,051,802 | Downhole driving unit having a hydraulic motor with a planetary gearing system In force · From the USPTO record | In force | From the USPTO record | |
| US 11,542,810 | Downhole tool for determining laterals In force · From the USPTO record | In force | From the USPTO record | |
| US 9,509,190 | Downhole elongated electrical motor In force · From the USPTO record | In force | From the USPTO record | |
| US 9,359,884 | Positioning tool In force · From the USPTO record | In force | From the USPTO record |
Also on record, not counted in the 72: 79 patents in force now held by others · 48 lapsed for an unpaid fee · 2 ended at full term · 1 surrendered on reissue. 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 pending · 3 abandoned · 39 no status recorded