How do I protect a logo? Logo protection depends on your creativity and your use.
Creative logos can qualify for copyright. The Copyright Office requires the logo to have creative non-text elements, such as the stylish lines and stylish letter 'K'. Shown is registration VAu001127336, filed by Gerald R. Prettyman for a client. If your logo is primarily standard text or simple elements such as lines, stripes, etc., the Copyright Office will not register them.
Trademark registration requires use of the logo as a brand. The pair of bottles forming a stylish letter 'K' is registered trademark number 4629623.