Seektech, Inc.

19 patents currently held · Updated Nov 14, 2026

21 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.

Ending by 2030

Dec 2026

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 Jan 14, 2027
The maintenance fee for Haptic directional feedback handles for location devices (US 9,082,269) comes due Jan 14, 2027. Unpaid by Jul 14, 2027, it lapses early.
1 fee due Jun 8, 2027
The maintenance fee for Buried Object Locator Apparatus with Safety Lighting Array (US 9,207,350) comes due Jun 8, 2027. Unpaid by Dec 8, 2027, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

2 terms have 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.

Patent	Title	Status	Expires	Confidence
US 7,557,559	Compact line illuminator for locating buried pipes and cables In force Term ends Dec 17, 2026 · From the USPTO record	In force	Term ends Dec 17, 2026	From the USPTO record
US 7,755,360	Portable locator system with jamming reduction In force Term ends Jul 10, 2027 · From the USPTO record	In force	Term ends Jul 10, 2027	From the USPTO record
US 7,948,236	Adaptive multichannel locator system for multiple proximity detection In force Ends no later than Sep 13, 2027 · From the USPTO record	In force	Ends no later than Sep 13, 2027	From the USPTO record
US 7,443,154	Multi-sensor mapping omnidirectional sonde and line locator In force Term ends Jan 8, 2028 · From the USPTO record	In force	Term ends Jan 8, 2028	From the USPTO record
US 8,773,133	Adaptive multichannel locator system for multiple proximity detection In force Term ends Feb 12, 2028 · From the USPTO record	In force	Term ends Feb 12, 2028	From the USPTO record
US 8,203,343	Reconfigurable Portable Locator Employing Multiple Sensor Array Having Flexible Nested Orthogonal Antennas In force Ends no later than Mar 13, 2029 · Medium confidence	In force	Ends no later than Mar 13, 2029	Medium confidence
US 8,013,610	High-Q Self Tuning Locating Transmitter In force Term ends Dec 18, 2029 · High confidence	In force	Term ends Dec 18, 2029	High confidence
US 7,969,151	Pre-amplifier and mixer circuitry for a locator antenna In force Term ends Jan 8, 2030 · From the USPTO record	In force	Term ends Jan 8, 2030	From the USPTO record
US 8,540,429	Snap-on pipe guide In force Term ends Aug 14, 2030 · From the USPTO record	In force	Term ends Aug 14, 2030	From the USPTO record
US 8,400,154	Locator antenna with conductive bobbin In force Term ends Dec 26, 2030 · From the USPTO record	In force	Term ends Dec 26, 2030	From the USPTO record

10 of 19 patents shown.

Pro members see all 19.

Pro members: see all 19 patents

Also on record, not counted in the 19: 21 patents in force now held by others · 6 lapsed for an unpaid fee · 27 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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