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Tokyo court rules human voice can be protected under publicity rights in Japan's first AI voice clone case

Tokyo court rules human voice can be protected under publicity rights in Japan's first AI voice clone case

Rule Changes

A landmark ruling opens the door to voice protection while the actor's removal request is dismissed

4 days ago: Tokyo District Court issues landmark ruling

Overview

Updated Yesterday

On September 30, 2026, the Tokyo District Court delivered Japan's first ruling that a person's voice can be protected under publicity rights. Voice actor Kenjiro Tsuda (55), known for starring roles in Jujutsu Kaisen and Yu-Gi-Oh!, sued TikTok's operating company seeking removal of videos narrated with an AI-generated imitation of his voice. The court dismissed his removal request because the anonymous poster had already deleted the account, but the legal principle was established: a voice, like a person's appearance, "can be considered as a symbol of an individual's personality."

The ruling matters for Japan's growing AI voice-clone industry and its thousands of performers. An August 2026 report by the NPO "Portrait Publicity Rights Protection and Monitoring Organization" found over 40,000 SNS posts suspected of unauthorized use of celebrities' likenesses or voices, drawing an estimated 335 million views. Economic losses were estimated between ¥2 billion and ¥4.5 billion ($13-29 million). The case also aligns with the justice ministry's August 2026 guidelines clarifying that voice falls under existing publicity rights protections.

Why it matters

Japan's performers now have a legal foundation to demand damages or takedowns when AI clones their voices without consent.

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Key Indicators

40,000+
SNS posts suspected of unauthorized likeness/voice use
2025 survey by NPO Portrait Publicity Rights Protection and Monitoring Organization.
¥2B-4.5B
Estimated economic loss from unauthorized use
$13-29 million in estimated losses to celebrities and performers.
1.47M
Average views per video on the infringing account
Average views across 188 videos posted between July 2024 and September 2025.
210,000+
Followers on the infringing TikTok account
The account earned an estimated ¥500,000-750,000 monthly from view-based payouts.

Voices

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People Involved

Organizations Involved

Timeline

July 2024 September 2026

6 events Latest: 4 days ago
Tap a bar to jump to that date
  1. Justice Ministry publishes voice protection guidelines

    Policy

    Final report establishes that individuals can demand compensation for confirmed voice infringement.

  2. Justice Ministry committee approves voice protection report

    Policy

    Expert committee finds voices should fall under the right of publicity.

  3. AI voice imitation videos begin appearing

    Incident

    Anonymous TikTok account begins posting 188 videos with narration resembling Tsuda's voice.

Scenarios

1

Voice actors file damages suits against AI voice clone creators

Likely Resolves by End of 2027

Discussed by: Meiji University IP law professor Toshiya Kaneko

The ruling's principle that voice falls under publicity rights enables performers to seek damages and injunctions against unauthorized AI voice use. Voice actors who have campaign groups like 'No More' could pursue individual cases using the court's reasoning, guided by the Justice Ministry's August 2026 guidelines. Success in damages suits would deter platforms and content creators from using AI voice clones of celebrities and performers.

2

Japan enacts explicit voice protection legislation

Possible Resolves by Q2 2028

Discussed by: Japan Justice Ministry study group

The ruling and ministry guidelines create pressure for actual legislation. The Justice Ministry's study group concluded in August 2026 that a 'right to one's voice' should receive legal protection. If the ruling's principle embeds into the political conversation, the Diet could pass a statute explicitly recognizing voice protection. This would move from judge-made law to statutory law.

3

TikTok and platforms face ongoing takedown requests from performers

Likely Resolves by Q2 2027

Discussed by: TikTok operating company statement

The company said it would find a balanced approach between technological advancement and rights protection. The ruling, combined with ministry guidelines, gives performers a legal basis to demand takedowns while content still exists. Platforms like TikTok could face a wave of removal requests from voice actors whose voices are used in AI-generated content, with courts now holding that deliberate refusal to remove infringing AI voice content could constitute a publicity rights violation.

Historical Context

2 moments from history that rhyme with this story — and how they unfolded.

February 2012

Japan Supreme Court recognizes publicity rights (2012)

Japan's Supreme Court first recognized the right of publicity as a legally protected right. The case involved a photographer whose images of a celebrity were used in an unauthorized publication.

Then

The court established a framework where celebrities could protect against unauthorized commercial use of their name and likeness.

Now

Created the judge-made doctrine that subsequent voice protection builds upon, with the 2026 ruling extending the same reasoning to voice.

Why this matters now

The 2026 ruling explicitly extends the 2012 Supreme Court precedent's reasoning from physical appearance to a person's voice.

2025-2026

Justice Ministry 'No More' campaign by Japanese voice actors (2025)

Japanese voice actors launched a campaign called 'No More' against using generative AI to mimic performers without permission, raising awareness of AI voice cloning's threat to their livelihoods.

Then

The campaign raised public awareness and created organizing infrastructure for affected performers.

Now

Pressured policy bodies and courts to address AI voice cloning, culminating in the 2026 ministry guidelines and court ruling.

Why this matters now

The voice actor community's mobilization created momentum that led to both the Ministry guidelines and this litigation.

Sources

(9)