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Ninth Circuit overturns ban on Perplexity’s Comet browser

The Ninth Circuit Court of Appeals vacated a federal judge’s order that barred Perplexity’s Comet browser from accessing Amazon’s website. The decision, issued on 4 Aug, means the browser can now operate, though the court noted that the user, not the software, initiates any interaction with Amazon’s servers. Amazon’s request for a rehearing was denied in September, and the broader lawsuit remains unresolved.

Key facts

  • Vacating order issued on 4 Aug by the Ninth Circuit.
  • Initial injunction placed by a San Francisco federal judge.
  • Court’s reasoning: user actions, not the AI, trigger access to Amazon.
  • Amazon’s rehearing request denied in September.
  • Case remains open after appellate ruling.

Summarised with AI from 2 sourcesRead our AI policy

Why it matters

The ruling clarifies legal responsibility for AI agents that act on user commands.

What changed

  1. First published from Fortune and MIT Technology Review