What this record means
The record shows that “DATARUN” is a cancelled Principal Register registration (Reg. No. 1855165) owned by CSA Research Pte Ltd, a Singapore corporation; the cancellation was entered on September 30, 2001 because the registrant failed to file an acceptable Section 8 declaration, so the mark is no longer live. The registration covered only class 016 “Paper Goods & Printed Matter,” specifically “manuals for use in the field of software development,” with a first use date of April 1994. Because the protection was limited to those printed manuals, a similar name used for other goods or services would present the closest record‑based concern in that narrow manual‑type context, but the record does not extend to all uses of the word “DATARUN.” The prosecution history shows the mark progressed through normal examination, received a Notice of Allowance, and was allowed on the Principal Register before its later cancellation; no oppositions, cancellations beyond the Section 8 event, or other enforcement actions appear in the file. I'd treat this as a meaningful concern if you plan to publish software‑development manuals under a similar name.
Informational only - not legal advice.