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Born in Japan · Nationality Japanese — Business / finance / technology

Takeshi Uchiyamada

Documented profile covering 4 controversies, including “US Senate hearing: defence of Toyota's electronics during the unintended acceleration crisis” and “Paice hybrid patents: jury finds infringement under doctrine of equivalents involving Prius technology”.

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Profile No. 0297 · Updated on 12 October 2026

4Documented controversies

7Sources

0Formal charge · all time

0Conviction

§ Legal statuses reflect the documented sources as of the date shown; they replace neither court decisions nor the presumption of innocence. Counts are not a rating. Methodology

I. Documented controversies

2005–2021

Toyota's ten-year failure to comply with US emissions-defect reporting obligations

No legal proceedings

US authorities established that Toyota had systematically failed for approximately ten years to meet its reporting obligations for emissions-related defects and recalls. Uchiyamada was Vice-Chairman and then Chairman for a substantial part of that period.

State of the evidence: US DOJ/EPA civil complaint and $180 million settlement
Legal status — source text: $180 million civil settlement; no personal charges against Uchiyamada

Sources · 1

[1]
U.S. DOJToyota to Pay $180 Million for Decade-Long Clean Air Act NoncomplianceGovernment sourceHigh reliability

Last verified: 22 August 2026

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2013–2017

Longstanding scepticism towards battery-electric vehicles and prioritisation of hybrids and hydrogen

No legal proceedings

Uchiyamada repeatedly stated that battery-electric vehicles still faced limitations in cost, range and charging and were not ready for mass adoption, while defending hybrids and fuel cells. These positions fuelled criticism that Toyota was falling behind in the transition to fully electric vehicles.

Legal status — source text: No legal proceedings

Sources · 2

[1]
ReutersElectric cars head toward another dead endMediaHigh reliability
[2]
ReutersElectric cars not ready for mass production yet: Toyota chairmanMediaHigh reliability

Last verified: 22 August 2026

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2010

US Senate hearing: defence of Toyota's electronics during the unintended acceleration crisis

No legal proceedings

Uchiyamada, then Toyota Vice-Chairman and a senior technical executive, testified before the US Senate that Toyota's extensive testing had found no cases in which the electronic throttle control system caused unintended acceleration. Senators challenged the scope and independence of certain tests.

Sources · 2

[1]
ToyotaPrepared Testimony of Takeshi UchiyamadaCompany documentHigh reliability
[2]
U.S. Senate Commerce CommitteeHearing Summary: Toyota's Recalls and Government's ResponseGovernment sourceHigh reliability

Last verified: 22 August 2026

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2004–2010

Paice hybrid patents: jury finds infringement under doctrine of equivalents involving Prius technology

Civil / administrative proceedings

Paice sued Toyota for infringement of patents relating to hybrid systems. A jury found that certain Toyota vehicles infringed a patent under the doctrine of equivalents, and a royalty was imposed before the parties settled their differences in 2010.

Attribution: Technology associated with the Prius chief engineer; no finding of personal infringement

Sources · 2

[1]
U.S. Court of Appeals for the Federal Circuit / JustiaPaice LLC v. Toyota Motor Corp.Court decisionHigh reliability
[2]
PR NewswireToyota and Paice Reach Settlement of Patent DisputesMediaMedium reliability

Last verified: 22 August 2026

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II. Constellation of documented links

No documented link with another published profile for now.

Two profiles are linked when a documented controversy of one names the other. The link points to that controversy and its sources; it does not indicate a personal relationship.

III. Has something changed?

A new court decision, a missing source, a mistake? Tell us what should be updated: every request is read by the editorial team.

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