[onoj]

Do you have many customers and do they identify you through the logo? You may have accumulated some good will in that case. However, as you have not registered the mark, there is no legal history.

As it is too late to contest their registration, your options are limited. A legal professional will be able to give more detailed advice but from my unprofessional understanding you may be able to preserve your use of the mark by negotiation with the company or possibly using good will and prior use in court. I do not think you can stop them doing anything however.

[carterdea]

yes we have about 180,000 users signed up and we assume they identify us through the logo. It's a big ass logo.

We're in different fields, hopefully they'll just ignore it. It wouldn't be smart of them to sue. We're not hurting their brand at all.