My first impression was that this was related to Project Gutenberg; that might raise trademark issues.
Could I start using Einstein (dead for 62 years) or Galileo (dead for 375 years) as a trademark?
The USPTO lists 8 different categories where "Gutenberg" is currently used as a trademark and a further 13 "dead" categories where it was used historically.
If you wanted to use Gutenberg in a different category – e.g. The Gutenberg fruit smoothie maker – you'd probably have no difficulty trademarking the name.
http://tmsearch.uspto.gov/bin/showfield?f=toc&state=4810%3A1...
[1] http://www.adweek.com/digital/how-salesforce-snagged-einstei...
Still, terrible and unoriginal name choice:
https://github.com/search?utf8=%E2%9C%93&q=gutenberg+static+...