What this record means
The record shows that “PAPERBACK SOFTWARE” is an abandoned application, not a live or registered mark, and the listed owner is SIMON & SCHUSTER, INC., a New York corporation that filed the intent‑to‑use request on Sep 22 1994. The only goods covered are “educational computer software with accompanying instruction manuals sold together as a unit in the field of childhood development” in International Class 009, so a similar name used for that type of software would create the closest record‑based concern. The record does not give the owner control over every use of the words “paperback” or “software” in unrelated fields. The prosecution history shows a series of non‑final office actions in 1995‑1996 and ends with an abandonment on Dec 30 1996 because the applicant failed to respond or responded late; there are no later maintenance filings or renewal dates. The supplied history contains no oppositions, cancellations or court actions, so no enforcement signal appears. I'd treat this as a modest concern if you plan to market comparable educational software, but the risk drops sharply for dissimilar products.
Informational only - not legal advice.