Reddit Sued to Disqualify Proskauer Rose From Perplexity Case
The legal filing alleges a conflict of interest arising from the firm's prior representation of Reddit.
Updated on Oct. 13, 2026 in Artificial Intelligence
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Reddit Inc. has requested that a New York federal judge disqualify the law firm Proskauer Rose from representing Perplexity AI. The motion follows a separate lawsuit in which Reddit alleges Perplexity AI improperly scraped data to train its artificial intelligence models.
Why it matters
The case highlights the increasing complexity of legal representation in the AI sector, where law firms face potential conflicts when balancing historical client relationships with new, high-profile technology engagements.
The filing centers on an official court motion in New York, citing an alleged conflict of interest regarding Proskauer Rose's prior legal work for Reddit.
The players
A social media platform and content aggregator that has become a critical data source for training artificial intelligence models.
Perplexity AI
An AI-powered search and answer engine that utilizes large language models to provide synthesized responses to user queries.
Proskauer Rose
A multinational law firm providing legal services to corporate entities across complex technology and intellectual property disputes.
The details
Reddit argues that Proskauer Rose violated legal representation rules by abandoning the firm as a client to instead represent Perplexity AI. The underlying dispute involves allegations that Perplexity AI scraped data, which is information collected from websites, to train large language models—algorithms that learn patterns from vast datasets to generate human-like text.
Timeline
October 13, 2026: Reddit filed the motion in a New York federal court.
The Tech Race
This move adds a significant procedural layer to the broader legal battle between content platforms and AI developers over data scraping. It tests the boundaries of law firm conflicts as AI companies aggressively seek legal counsel experienced in high-stakes intellectual property defense.
The outcome of this motion will determine the composition of the legal teams involved in the high-stakes data-scraping dispute. For the industry, it sets a standard for how legal firms manage their client portfolios as they navigate the emerging AI litigation landscape.
The takeaway
This case underscores the professional liability risks that firms face when representing parties in the burgeoning field of AI data training. Observers should track the upcoming court ruling, which will indicate how judges view potential conflicts involving prior corporate representation in AI-related litigation.
Further reading
For broader context on the ongoing tension between platforms and AI companies, explore our Artificial Intelligence section.
Source note: This article includes information reported by Law360.
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