The cost to respond to an office action depends on the complexity of the action. The USPTO doesn’t charge fees for office actions, but certain response filings—such as a Petition for Expungement or Reexamination—incur fees as high as $400. But the main costs to consider in regard to office actions are attorney fees. At Northwest, we include procedural office actions in our $249 Trademark Service. For substantive office actions, we refer clients to our law firm, Law on Call, which tackles office actions for $150/hour.