NORTHWEST AIRLINES

What this record means

The record shows that “NORTHWEST AIRLINES” is a live, Principal Register service mark owned by Delta Air Lines, Inc., a Delaware corporation, and it has been renewed as of September 26 2023. The registration covers “air transportation services” in International Class 039, with a first use date of October 1 1926, so a similar name used for airline or other air‑transport services would be the closest record‑based concern. The record does not give Delta control over every possible use of the words “Northwest” or “Airlines” outside that specific service category. Because the mark is on the Principal Register, the prosecution history simply reflects standard filing, amendment, publication, registration and periodic Section 8/9 renewals, culminating in the most recent renewal notice and acceptance on September 26 2023. No oppositions, cancellations or court actions appear in the supplied history. I'd treat this as a meaningful concern if you plan to use a comparable name for airline‑related services.