I was a big fan of Digital Solutions Inc.'s Paperback Software, a Commodore 64/128 productivity suite that featured an interoperable word processor (Paperback Writer), spreadsheet (Paperback Planner), and database (Paperback Filer). The word processor in particular had a combination of features (columns, a spell checker, compatibility with GEOS and with competing productivity suites, a built-in fastloader, and near-WYSIWYG 80-column editing, even on the C64) that was seldom found in other products.
One thing about the suite that always confused me was its abrupt name change. Some time around 1986, all the software titles were renamed from Paperback to Pocket. Digital Solutions announced the new name in its advertisements, but didn't provide any explanation for the change:
Does anyone know why the name was changed? Digital Solutions had already invested heavily in promoting the "Paperback" name in print and video advertisements, such that the products had attracted good reviews and brand recognition. It's unlikely they would have thrown all this out on a whim, or simply because they liked the new name better. But even if that were the case, the announcements about the renaming certainly would have mentioned the old name (e.g., "Paperback Writer is now Pocket Writer!"); instead, it is conspicuously missing. This makes me suspect that the name change was prompted by some legal dispute, and that they were no longer allowed to mention the old name at all.
Most likely there was some existing brand of software that had "Paperback" in its name, and whose publisher objected to Digital Solutions's use of its trademark. Does anyone know what that software might be and who published it? An alternative scenario might be that Northern Songs, the publisher of the Beatles song "Paperback Writer", sued or threatened to sue Digital Solutions for evoking a connection between its software and the song. This scenario is legally less supportable, unless perhaps Digital Solutions was using the text or music from the song without permission in its publicity material. But I'm not aware of any advertisements where this is the case.