|John Wiley's For Dummies TM|
In John Wiley v. John Does 1-36 (S.D.N.Y. December 7, 2011 11 Civ 8943), we see an example of a book publisher, here John Wiley, publisher of the "For Dummies"TM series of books suing individuals who have used Bittorrent to download a single book.
The complaint accuses each downloader of copyright and trademark infringement and seeks treble damages on trademark counterfeiting claims, plus punitive damages.
John Wiley Pursues Bit Torrent Dummies
Purchase Copyright Litigation Handbook 2011 by Raymond J. Dowd from West here