I can't honestly say if octologo is a scam or not, but i can tell you they are horrible at customer service and delivery of product. They do not respond to questions via email, chat or phone call (I have tried all of the above.) They will not answer simple questions regarding the work they have done for you, and if you do the trademark service, i can't even tell you if it is real. I currently have a BBB claim against them, and if you look, there are numerous other ones against them. They sent me shirts (weeks late) and they were completely wrong. When i said something to them, they completely ignored me.
STAY AWAY.