Twenty years ago, Kevin Rivette and David Kline wrote a book about the hidden value contained within companies’ underutilized patents. These patents, Rivette and Kline argued, represented “Rembrandts in the Attic” (the title of their book). Patents, the authors suggested, shouldn’t be seen merely as passive properties, but as strategic assets — a “new currency” that could be deployed in the quest for competition, brand reputation, and advances in research and development.