WSP, Inc.

9 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

May 2030

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 Mar 3, 2027
The maintenance fee for Methods and systems for spatial change indicator analysis (US 10,400,583) comes due Mar 3, 2027. Unpaid by Sep 3, 2027, it lapses early.
2 fees due Jul 9, 2027
1 fee due Sep 29, 2027
The maintenance fee for Method and system for remediation system benefit analysis (US 9,299,038) comes due Sep 29, 2027. Unpaid by Mar 29, 2028, it lapses early.

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.

Showing 1 to 9 of 9

Patent	Title	Status	Expires	Confidence
US D757,876	Muzzle for an AR15 rail In force Term ends May 31, 2030 · From the USPTO record	In force	Term ends May 31, 2030	From the USPTO record
US 9,299,038	Method and system for remediation system benefit analysis In force Term ends Jan 12, 2035 · From the USPTO record	In force	Term ends Jan 12, 2035	From the USPTO record
US 10,304,223	Method and System for Sufficiency Evaluation of Changes to a Well Monitoring System In force Term ends Feb 7, 2037 · Medium confidence	In force	Term ends Feb 7, 2037	Medium confidence
US 10,400,583	Methods and systems for spatial change indicator analysis In force Term ends Aug 21, 2037 · From the USPTO record	In force	Term ends Aug 21, 2037	From the USPTO record
US 11,870,260	System for controlling voltage and reactive power for an electrical grid In force Term ends Jan 11, 2042 · From the USPTO record	In force	Term ends Jan 11, 2042	From the USPTO record
US 11,870,261	Method for Controlling Voltage and Reactive Power for an Electrical Grid In force Ends no later than Jan 13, 2042 · Medium confidence	In force	Ends no later than Jan 13, 2042	Medium confidence
US 12,744,382	Method for Controlling Voltage and Reactive Power for an Electrical Grid In force Term ends Feb 5, 2042 · High confidence	In force	Term ends Feb 5, 2042	High confidence
US 12,706,479	System for Controlling Voltage and Reactive Power for an Electrical Grid In force Ends no later than Feb 10, 2042 · Low confidence	In force	Ends no later than Feb 10, 2042	Low confidence
US 12,638,812	System and Method for Promoting Safe Interaction with Electrical Equipment In force Term ends Apr 22, 2044 · High confidence	In force	Term ends Apr 22, 2044	High confidence

Also on record, not counted in the 9: 1 lapsed for an unpaid fee. 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

Every application published under this name has become a patent.