The Patent Finder
PW

Pratt & Whitney Canada Corp.

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

2,714 patents currently held

37 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.
2 more records may belong here and await a decision; they are not counted.

The next term ends in Nov 2026. from the record

Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
266
Ending by 2030
Nov 2026
Next term end
2,327
Patent families

When these terms end

Held patents by the year their term ends
notable patents fee due within 90 days 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. 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
Reverse-Flow Gas Turbine Engine US 11,415,063
Cited by 24 later US patents, top 5% of utility patents granted in 2022 in our data. Protection runs to 2038.
Ends Mar 2038 · High confidence Also notable
Planetary Gearbox for Gas Turbine Engine US 11,635,029
Cited by 15 later US patents, top 5% of utility patents granted in 2023 in our data. Protection runs to 2037.
Ends Feb 2037 · High confidence Also notable
Rotary Internal Combustion Engine with Pilot Subchamber US 9,038,594
Cited by 41 later US patents, top 25% of utility patents granted in 2015 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2032.
Ends Sep 2032 · 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.
  • 40 fees due Dec 2 to 30, 2026 · next Dec 2
  • 43 fees due Jan 2 to 30, 2027 · next Jan 2
  • 63 fees due Feb 1 to 28, 2027 · next Feb 1
  • 37 fees due Mar 1 to 26, 2027 · next Mar 1
  • 44 fees due Apr 1 to 30, 2027 · next Apr 1
  • 49 fees due May 3 to 28, 2027 · next May 3
  • 40 fees due Jun 1 to 30, 2027 · next Jun 1
  • 65 fees due Jul 2 to 30, 2027 · next Jul 2
  • 32 fees due Aug 4 to 27, 2027 · next Aug 4
  • 46 fees due Sep 1 to 30, 2027 · next Sep 1
  • 30 fees due Oct 2 to 30, 2027 · next Oct 2
  • 12 fees due Nov 3 to 12, 2027 · next Nov 3

Which patents, and when each one lapses · Pro

Recent changes

What they patent

The 5 largest of its 2,327 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
Rotary Internal Combustion Engine with Pilot Subchamber10 in forceto Sep 2032
Reverse-Flow Gas Turbine Engine7 in forceto Mar 2038
Reverse-Flow Gas Turbine Engine with Electric Motor5 in forceto Jan 2041
Planetary Gearbox for Gas Turbine Engine5 in forceto Jun 2039
Method and System for Failure Prediction Using Lubricating Fluid Analysis5 in forceto Dec 2034

Patents held now

Soonest term end first.
PatentTitleStatusExpiresConfidence
US 7,352,544Method and Apparatus for Providing a Remedial Strategy for an Electrical Circuit
In force
 · High confidence
In forceHigh confidence
US 7,451,600Gas Turbine Engine Combustor with Improved Cooling
In force
 · High confidence
In forceHigh confidence
US 7,628,578Vane Assembly with Improved Vane Roots
In force
 · Medium confidence
In forceMedium confidence
US 7,637,718Vane Assembly with Outer Grommets
In force
 · High confidence
In forceHigh confidence
US 7,303,461Method of Machining Airfoils by Disc Tools
In force
 · High confidence
In forceHigh confidence
US 7,439,713Modulation Control of Power Generation System
In force
 · High confidence
In forceHigh confidence
US 7,484,936Blades for a Gas Turbine Engine with Integrated Sealing Plate and Method
In force
 · High confidence
In forceHigh confidence
US 7,413,400Vane Assembly with Grommet
In force
 · High confidence
In forceHigh confidence
US 7,533,531Internal Fuel Manifold with Airblast Nozzles
In force
 · High confidence
In forceHigh confidence
US 7,530,782Foreign Object Damage Resistant Vane Assembly
In force
 · High confidence
In forceHigh confidence
10 of 2,714 patents shown.
Pro members see all 2,714.
Pro members: see all 2,714 patents
Also on record, not counted in the 2,714: 37 patents in force now held by others · 353 patents ended · 371 applications pending · 315 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.
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.
Export every term end as CSV · Pro
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