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Generative AI and E-Discovery In Patent Litigation

By James R. Tyminski and Taskeen Aman
December 01, 2025

As electronic discovery continues to evolve, pharmaceutical and technology companies — particularly those navigating the complexities of patent litigation — face a rapidly changing technological landscape that is increasingly influenced by artificial intelligence (AI) tools. Discovery in U.S. litigation, especially document review, can often be a lengthy and expensive process. This naturally raises the question: why not leverage AI tools more aggressively to streamline the process? Generative AI (Gen AI) promises a faster, smarter and more scalable document review, but not without complications.

Traditionally, e-discovery meant painstaking manual review of documents, emails, and files by teams of attorneys. As data volumes ballooned, predictive tools like computer assisted review (CAR) or technology assisted review (TAR) stepped in to help. These tools use supervised machine learning models that require legal teams to train the software with tagged examples (e.g., responsive versus non-responsive documents), allowing the software to predict relevance across large volumes of documents. While TAR transformed the scope of discovery, particularly in document-heavy patent litigations, it remained a largely reactive tool.

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