What he said is probably to use the trademark you have applied for to apply for a copyright. This is valid for life, but it is of no use. Just have a trademark. Copyright only protects the current font. If If someone else changes the font, your copyright will be of no use. Although the trademark is valid for ten years, you can renew it if you want to use it after ten years. You don’t need to transfer it directly and you can still sell it at a good price