The quick version
Printed book: Class 16. E-book: Class 9. Ongoing publishing service: Class 41. Printing done for others: Class 40. Same content, four possible classes, depending entirely on what form it takes and who's doing what with it.
A Class Built Before Anyone Had a Screen
Nice Class 16 is one of the oldest categories in the system, dating to an era when "printed matter" was simply how commercial content existed. It covers paper and cardboard, printed books, magazines, newspapers, and periodicals, the entire stationery and office-supply aisle — pens, pencils, markers, notebooks, folders, adhesives — plus printed packaging, posters, calendars, and printed instructional materials. That breadth is why it still matters enormously for stationery and art-supply brands even as its center of gravity has shifted for media companies.
The Same Content, Three Different Classes
Digitization didn't shrink Class 16 so much as split it into pieces. Twenty years ago a publisher filed here and was mostly done. Today the identical piece of content might exist as a printed object (Class 16), a downloadable or streamed file (Class 9), and an ongoing online service or platform (Class 41, sometimes 42). A magazine that runs both a print edition and a digital one needs Class 16 for the physical magazine and Class 9 for the digital version — and if it sells subscriptions to an online content service, Class 41 as well. Skipping any one of the three leaves that format of the brand unprotected. Our Class 41 guide covers the publishing-as-service angle and our Class 9 guide covers the digital-file side.
For a brand whose content is primarily digital, Class 16 might only cover incidental printed merchandise rather than the core product — worth filing, but not the main event. For a stationery brand like Crayola or Moleskine, it's the opposite: Class 16 is the entire business. Sharpie's marker designs and Crayola's crayon-and-art-supply portfolio remain some of the most recognizable Class 16 filings in consumer goods precisely because their products never left the physical-paper world this class was built around.
The Overlooked Angle: Packaging
A detail most founders miss entirely: because Class 16 covers paper and cardboard packaging materials, it can support protection for the printed elements of a product's box or wrapper — feeding into a broader trade-dress strategy even for a brand whose core product sits in a completely different class. If your packaging is part of how customers recognize you, Class 16 is worth filing alongside your primary class, not just for publishers and stationers.
The recurring mistakes: filing an e-book here instead of Class 9, confusing the publishing service (Class 41) with the printed object itself (Class 16), and missing the digital class entirely for a brand that genuinely operates across both formats. Descriptive publication titles face the same refusal risk as descriptive names anywhere else in the register.
Search registered Class 16 trademarks before committing to a title, a masthead, or stationery branding — and decide up front which formats you actually offer, since that decision drives the whole filing strategy.