The price we quoted you in our email covers the cost of the attorney’s services in responding to your Office Action.
In some cases, there may be additional government filing fees. Frequently, these government fees are optional. Other times, they are mandatory, but rarely exceed $150. If there are additional government fees, they are listed in your Office Action.
You can find your Office Action and review it for any extra fees by following Steps 1 and 2 here: How do I check the status of my trademark application or registration?