The Patent Finder
WA

Walbro LLC

Filings on record here from 2001, where this site's data begins
OverviewNotableFeesChangesFamiliesPatent listSources & methods

8 patents currently held

97 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.
1 more record may belong here and awaits a decision; it is not counted.

The next term ends in May 2034. from the record

Of the 97 now held by other companies, 96 name Overdrive Acquisition LLC as their current owner, and 1 more name another party. Each row says which.

Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
0
Ending by 2030
May 2034
Next term end
8
Patent families

When these terms end

Held patents by the year their term ends
20262027202820292030203120322033203420352036203720382039204020412042204320442045
notable patents all others Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 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.

Notable patents

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

Formerly held, still cited

Notable
Cited by 28 later US patents, top 5% of utility patents granted in 2021 in our data. Protection runs to 2037.
Ends Apr 2037 · High confidence
Also notable
Cited by 16 later US patents, top 10% of utility patents granted in 2022 in our data. Protection runs to 2038.
Ends Oct 2038 · High confidence
Also notable
The most cited patent in this portfolio, cited by 46 later US patents, top 10% of utility patents granted in 2016 in our data. Protection runs to 2035.
Ends Jan 2035 · 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.
  • 1 fee due Oct 21, 2027
    The maintenance fee for Ignition System for Light-Duty Combustion Engine (US 10,626,839) comes due Oct 21, 2027. Unpaid by Apr 21, 2028, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

  • 1 term has ended since Aug 16, 2026

What they patent

The 5 largest of its 8 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.

Patents held now

Soonest term end first.

Showing 1 to 8 of 8

PatentTitleStatusExpiresConfidence
US 10,626,839Ignition System for Light-Duty Combustion Engine
In force
 · High confidence
In forceHigh confidence
US 11,255,457Solenoid Valve
In force
 · High confidence
In forceHigh confidence
US 11,073,123Controlling a Light-Duty Combustion Engine
In force
 · High confidence
In forceHigh confidence
US 11,187,191Charge Forming Device with Tamper Resistant Adjustable Valve
In force
 · High confidence
In forceHigh confidence
US 11,215,152Fuel Pump Adapter
In force
 · High confidence
In forceHigh confidence
US 11,008,951Low Pressure Fuel Injection System for a Multi-Cylinder Light-Duty Internal Combustion Engine
In force
 · High confidence
In forceHigh confidence
US 11,988,184Engine Ignition System with Multiple Ignition Events
In force
 · High confidence
In forceHigh confidence
US 12,662,980Fuel Pressure Regulator with Jet Pump
In force
 · High confidence
In forceHigh confidence
Also on record, not counted in the 8: 97 patents in force now held by others · 125 patents ended · 4 applications pending · 24 applications 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.
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.
The Patent Finder CompaniesExpirationsCalculatorWatchlistPricing MethodologyCorrectionsLegalPrivacysupport@thepatentfinder.com Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) Part of 137 Finder · © 2026 137 Finder LLC · Sources cited