There are a few bands named Trademark:

1. Tony Reeves and Mark Angus, underground electronic music producers, signed to Intelligent Audio, run by Clare Thwaites - DJ Clare Large.
http://intelligentaudio.net

2. An electropop band from England.
http://www.trademark-online.co.uk

3. Israeli PunkRock band.

4. Japanese indie rock band
http://www.trademark-web.net/

5.Trademark Arad
http://www.myspace.com/trademarkarad

5. a Louisville mid 90s emo/new school band who featured on the Shandle Records compilation. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.