CARL ZEISS

What this record means

The record shows that “CARL ZEISS” was a Principal Register trademark owned by ZEISS, CARL, a corporation organized in Germany, but it is now dead and expired because the registration was not renewed, with the last status change recorded on Oct 5 1992. The registration covered a very specific set of scientific and optical equipment in International Class 009, including microscopes, telescopes, photographic objectives, spectrometers, interferometers, cameras, projectors, photometric devices and related accessories. A similar name used for products in that same scientific‑instrument field would raise the closest record‑based concern, while uses outside those categories would be farther from the scope shown here. The record does not give the owner control over every possible use of the words “CARL ZEISS.” There is no prosecution history indicating any refusals or amendments, and the supplied history contains no oppositions, cancellations or other enforcement actions. I'd treat this as a meaningful concern if you plan to market optical or measurement devices under a similar name.