Metrol Technology Limited

38 patents currently held · Updated Nov 14, 2026

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

Ending by 2030

Jul 2031

Next term end

When these terms end

5 yrs10 yrs20 yrs

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 Nov 23, 2026
The maintenance fee for Apparatuses and methods for sensing temperature along a wellbore using semiconductor elements (US 11,655,706) comes due Nov 23, 2026. Unpaid by May 24, 2027, it lapses early.
1 fee due Dec 13, 2026
The maintenance fee for Downhole communication (US 11,674,385) comes due Dec 13, 2026. Unpaid by Jun 14, 2027, it lapses early.
1 fee due Feb 22, 2027
The maintenance fee for Downhole power delivery (US 11,732,553) comes due Feb 22, 2027. Unpaid by Aug 23, 2027, it lapses early.
1 fee due Apr 24, 2027
The maintenance fee for Downhole energy harvesting (US 11,795,786) comes due Apr 24, 2027. Unpaid by Oct 25, 2027, it lapses early.
2 fees due Jun 26, 2027

Which patents, and when each one lapses · Pro

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 9,359,859	Casing valve In force Ends no later than Jul 20, 2031 · From the USPTO record	In force	Ends no later than Jul 20, 2031	From the USPTO record
US 9,714,552	Well comprising a safety mechanism and sensors In force Ends no later than Jul 20, 2031 · From the USPTO record	In force	Ends no later than Jul 20, 2031	From the USPTO record
US 9,945,204	Safety mechanism for a well, a well comprising the safety mechanism, and related methods In force Term ends Jul 20, 2031 · From the USPTO record	In force	Term ends Jul 20, 2031	From the USPTO record
US 10,030,466	Well In force Ends no later than Jul 20, 2031 · From the USPTO record	In force	Ends no later than Jul 20, 2031	From the USPTO record
US 9,410,420	Well In force Term ends Jan 8, 2032 · From the USPTO record	In force	Term ends Jan 8, 2032	From the USPTO record
US 11,072,999	Downhole Energy Harvesting In force Ends no later than Feb 9, 2037 · Medium confidence	In force	Ends no later than Feb 9, 2037	Medium confidence
US 10,858,932	Monitoring well installations In force Term ends Mar 31, 2037 · From the USPTO record	In force	Term ends Mar 31, 2037	From the USPTO record
US 11,795,786	Downhole energy harvesting In force Term ends Apr 11, 2037 · From the USPTO record	In force	Term ends Apr 11, 2037	From the USPTO record
US 10,844,680	Apparatus and method to expel fluid In force Term ends May 26, 2037 · From the USPTO record	In force	Term ends May 26, 2037	From the USPTO record
US 11,655,706	Apparatuses and methods for sensing temperature along a wellbore using semiconductor elements In force Ends no later than May 26, 2037 · From the USPTO record	In force	Ends no later than May 26, 2037	From the USPTO record

10 of 38 patents shown.

Pro members see all 38.

Pro members: see all 38 patents

Also on record, not counted in the 38: 1 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.

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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.

3 no status recorded

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