John Wiley & Sons has filed suit in New York City, claiming 27 users of the popular peer-to-peer file-sharing service BitTorrent have illegally downloaded copies of books in the publisher’s popular Dummies series. According to the complaint filed on Oct. 27, the identities of the defendants in the case are unknown, but their IP addresses have been identified.

The complaint states that Wiley is seeking “legal and equitable relief to remedy defendants’ willful infringement of Wiley’s copyrights and trademarks.” A PDF copy of the complaint was obtained by the website TorrentFreak. Wiley claims that, in addition to lost revenues from the illegal downloads, the company stands to suffer “harm to its goodwill and reputation in the marketplace for which money cannot compensate. Wiley is particularly concerned that its trademarks are used in connection with unauthorized electronic products, which could contain malicious viruses.

From TorrentFreak:

“BitTorrent users on a single site, demonoid.me, have downloaded one of the works that is the subject of this suit, Photoshop CS 5 All-In-One FOR DUMMIES, more than 74,000 times since June 6, 2010, the complaint adds.

Other pirated books listed in the complaint include familiar titles such as AutoCAD 2011 for Dummies, Day Trading for Dummies, Calculus Essentials for Dummies, and WordPress for Dummies. Interestingly, the popular BitTorrent for Dummies is not included.