What this record means
The record shows that ROT‑NOT is no longer active – it was cancelled on Dec 20 2019 because the registrant failed to file a required Section 8 declaration, and the USPTO lists the mark as “dead · cancelled” under the Principal Register; the owner was Bluewater Chemgroup, Inc., a Florida corporation. The registration covered only “Fertilizers” in International Class 001, so a similar name used for anything else would be farther from the scope shown here, while a fertilizer‑related use would present the closest record‑based concern. The record does not give the owner control over every possible use of the word “ROT‑NOT.” No Supplemental Register activity appears, and the prosecution history simply tracks the normal filing, allowance, registration and the eventual Section 8 cancellation. The supplied history contains no oppositions, cancellations beyond the Section 8 event, or other enforcement actions. I'd treat this as a moderate concern if you plan to market fertilizers under a similar name, but the risk drops for unrelated goods or services.
Informational only - not legal advice.