I think that the vendor name should go at the beginning of the package name, since
suffixes are mostly used in Fedora to denote subpackages, like -data, -docs, -devel, or
modules, plugins, and such.
We have a couple of "google-*" font packages, so this usage of the vendor name
should be okay - but as Dominik noted, it's probably best to ask on the fedora-legal
list.