Wencon Development, Inc.

25 patents currently held · Updated Nov 14, 2026

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

Recorded under 2 name spellings.

Ending by 2030

Apr 2028

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 14, 2026
The maintenance fee for Rail-Less Roof Mounting System (US 10,291,176) comes due Nov 14, 2026. Unpaid by May 14, 2027, it lapses early.
1 fee due Jan 11, 2027
The maintenance fee for System of S-Shaped Conduit Mounting Assembly Hooks (US 11,698,088) comes due Jan 11, 2027. Unpaid by Jul 12, 2027, it lapses early.
1 fee due Jun 17, 2027
The maintenance fee for Waterproofing mounting system for attaching solar modules to a roof (US 10,511,252) comes due Jun 17, 2027. Unpaid by Dec 17, 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 7,861,485	Method for Installing a Stanchion on a Tile Roof and System Therefor In force Ends no later than Apr 19, 2028 · Medium confidence	In force	Ends no later than Apr 19, 2028	Medium confidence
US 7,762,027	System for Attaching an Article to a Roof and Method of Use In force Term ends Dec 12, 2028 · High confidence	In force	Term ends Dec 12, 2028	High confidence
US 8,167,258	Clamp for Connecting Two Elongated Members and Method of Use In force Term ends Jul 29, 2030 · High confidence	In force	Term ends Jul 29, 2030	High confidence
US D827,160	Flat Replacement Tile In force Term ends Aug 28, 2033 · High confidence	In force	Term ends Aug 28, 2033	High confidence
US D827,873	Bowed Replacement Tile In force Term ends Sep 4, 2033 · High confidence	In force	Term ends Sep 4, 2033	High confidence
US D827,874	Double Bowed Replacement Tile In force Term ends Sep 4, 2033 · High confidence	In force	Term ends Sep 4, 2033	High confidence
US 8,938,932	Rail-Less Roof Mounting System In force Term ends Jan 28, 2034 · High confidence	In force	Term ends Jan 28, 2034	High confidence
US 9,712,106	Rail-Less Roof Mounting Clamp Assembly Components In force Term ends Jan 28, 2034 · High confidence	In force	Term ends Jan 28, 2034	High confidence
US 9,755,572	Rail-Less Roof Mounting System In force Term ends Jan 28, 2034 · High confidence	In force	Term ends Jan 28, 2034	High confidence
US 9,813,012	Rail-Less Roof Mounting Clamp Assembly In force Term ends Jan 28, 2034 · High confidence	In force	Term ends Jan 28, 2034	High confidence

10 of 25 patents shown.

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Pro members: see all 25 patents

Also on record, not counted in the 25: 2 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.

1 pending

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