Understanding Patent Costs
A utility patent typically costs $5,000-$15,000+ to file and $15,000-$40,000+ over 20 years including maintenance. Provisional patents are cheaper ($1,500-$5,000) but expire after 12 months. Small and micro entities receive significant fee reductions from the USPTO. The complexity of the invention and number of claims significantly affect attorney costs.
Maintenance Fee Schedule
Utility patents require maintenance fees at 3.5, 7.5, and 11.5 years after grant. Missing a maintenance payment results in patent expiration, though a 6-month grace period is available with a surcharge.