Powerset Patents

Patent portfolio assigned to Powerset (verified via public assignee records). Defunct natural-language/semantic search startup; licensed NLP tech from Xerox PARC and was acquired by Microsoft in 2008 (its tech fed early Bing semantic search). Patents confirmed via Justia assignee page for Powerset Inc (semantic search / query-relevant result highlighting). No current competitors/customers (company shut down ~2010).