Microsoft’s Copilot Targeted in Inventor’s AI Search Patent Suit

April 24, 2026, 9:07 PM UTC

A New York-based text analytics company said Microsoft Corp.'s Copilot artificial intelligence assistant infringes three of its patents.

Semantic Engines LLC said its patents—US Patent Nos. 8,239,358; 9,218,414; and 10,783,192, which describe a way to run a multi-document search—date back to a February 2007 patent application. The complaint says that in recent years Microsoft, as it sought to establish itself in the AI space, gravitated toward and ultimately infringed Semantic’s patented search technology.

The same year Semantic filed for its parent patent in 2007, Semantic’s founder Dmitri Soubbotin reached out to Microsoft and set up a call ...

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