What this record means
The record shows the application for the mark “JACK” is abandoned, so it is not a live or registered trademark, and the owner listed is FOODMAKER, INC., a Delaware corporation. The filing covered “restaurant services” in International Class 042, with a claimed first use date of July 20, 1970. Because the only listed service is restaurant‑related, a similar name used for food‑service or dining concepts would be the closest area of concern, while uses in unrelated fields such as apparel or technology fall farther from the scope shown. The abandonment entry on March 25, 1997 indicates the applicant failed to respond to an Office action, and no later maintenance or renewal events appear in the file. The prosecution history contains only the assignment to an examiner and a non‑final action before the abandonment, and there are no recorded oppositions, cancellations or court actions. I'd treat this as a modest concern if you plan a restaurant‑type brand using “JACK,” but the record does not block other kinds of uses.
Informational only - not legal advice.