46 patents currently held

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

The next term ends in Dec 2026. from the record

Free plan: 3 watched companies. Pro: unlimited.

Alerts on its grants, lapses and transfers.

Ending by 2030

Dec 2026

Next term end

Patent families

When these terms end

5 yrs10 yrs20 yrs

Held patents by the year their term ends

2026 2027 2028 2029 203020312032203320342035 2036 2037 2038 2039 2040 2041 2042204320442045

notable patents fee due within 90 days all others Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know

Notable: the highest-ranked patents in this portfolio by citations and family size. Fee due within 90 days: a maintenance fee is due within 90 days of when this page was computed and not yet paid.

Notable patents

Ranked by citations and family size, against patents of the same kind granted the same year. How we rank

Notable

Perimeter Drain US 11,066,804

Cited by 8 later US patents, top 25% of utility patents granted in 2021 in our data. Protection runs to 2040.

Ends Jan 2040 · High confidence Also notable

Apparatus and Method for Lifting a Concrete Slab US 11,346,099

Cited by 4 later US patents, top 25% of utility patents granted in 2022 in our data. Protection runs to 2039.

Ends Dec 2039 · High confidence Also notable

Water Drainage System US 7,836,640

Renewed at every maintenance window since the 2010 grant; no more fees are due before its term ends in 2028.

Ends Dec 2028 · High confidence

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 6 to 27, 2026 · next Dec 6
2 fees due Feb 1 to 22, 2027 · next Feb 1
1 fee due Mar 5, 2027
The maintenance fee for Pier Bracket Assembly (US 11,746,490) comes due Mar 5, 2027. Unpaid by Sep 7, 2027, it lapses early.
1 fee due Jun 5, 2027
The maintenance fee for Apparatus and Method for Lifting a Concrete Slab (US 11,834,822) comes due Jun 5, 2027. Unpaid by Dec 6, 2027, it lapses early.
1 fee due Aug 6, 2027
The maintenance fee for Apparatus for Supporting Overhead Structure (US 11,891,825) comes due Aug 6, 2027. Unpaid by Feb 7, 2028, it lapses early.
1 fee due Sep 26, 2027
The maintenance fee for Sump Pump Crock (US 11,939,117) comes due Sep 26, 2027. Unpaid by Mar 27, 2028, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

3 of the patents on this record were granted since Aug 17, 2026
1 term has ended since Aug 17, 2026

What they patent

The 5 largest of its 33 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.

Perimeter Drain	3 in force	to Jan 2040
Apparatus and Method for Lifting a Concrete Slab	3 in force	to Dec 2039
Gutter Cover, Gutter System Using the Gutter Cover, and Method of Installing the Gutter Cover	2 in force	to Dec 2042
Sump Pump Crock	2 in force	to Jul 2042
System and Method for Monitoring Settling of a Building	2 in force	to May 2041

Patents held now

Soonest term end first.

Patent	Title	Status	Expires	Confidence
US 7,516,592	Foundation Crack Sealer and Method of Use In force Term ends Dec 6, 2026 · High confidence	In force	Term ends Dec 6, 2026	High confidence
US 7,635,240	Bearing Plate for Use in an Anchor Assembly and Related Method In force Term ends Feb 15, 2027 · High confidence	In force	Term ends Feb 15, 2027	High confidence
US 7,503,725	Subsurface Drainage System In force Term ends Aug 20, 2027 · High confidence	In force	Term ends Aug 20, 2027	High confidence
US 7,836,640	Water Drainage System In force Term ends Dec 31, 2028 · High confidence	In force	Term ends Dec 31, 2028	High confidence
US 7,748,170	Bulkhead Floor Drain In force Term ends Feb 25, 2029 · High confidence	In force	Term ends Feb 25, 2029	High confidence
US 8,161,705	Wall Panel System In force Term ends Apr 2, 2030 · High confidence	In force	Term ends Apr 2, 2030	High confidence
US 8,186,127	Basement Water Drainage Method for Use with a Foundation Having No Footing In force Term ends Nov 1, 2030 · High confidence	In force	Term ends Nov 1, 2030	High confidence
US D901,645	Drain Outlet In force Term ends Nov 10, 2035 · High confidence	In force	Term ends Nov 10, 2035	High confidence
US D912,220	Drain Pipe In force Term ends Mar 2, 2036 · High confidence	In force	Term ends Mar 2, 2036	High confidence
US D912,221	Pipe In force Term ends Mar 2, 2036 · High confidence	In force	Term ends Mar 2, 2036	High confidence

10 of 46 patents shown.

Pro members see all 46.

Pro members: see all 46 patents

Also on record, not counted in the 46: 3 patents ended · 8 applications pending · 1 application abandoned. List them

Sources and methods

Compiled from USPTO application file histories, grants and recorded assignments, with the company's own names reviewed by hand. How this record was built

Portfolio grouped automatically from ownership conveyances to the names matched to this company, usually every name that begins with its own, so it counts patents an affiliate holds; each list row names the holder of record. Security interests are excluded and ambiguous records are not reviewed by hand.

Fee due within 90 days marks a patent with a maintenance fee due within 90 days of the date this page was computed and not yet recorded paid, so it can end earlier than the bar shows. A fee left unpaid ends the patent at the close of the six month grace period that follows its due date, not on the due date itself. It is not a prediction that the fee will be missed.

Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.

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