Sources

Every source cited anywhere on this site. Government and regulatory sources set the rules; company-published sources state what a company says about itself and are labeled that way.

1. USPTO — Finding a patent practitioner USPTO
   USPTO guidance on finding and verifying a registered patent attorney or agent.
2. USPTO — Find a patent practitioner USPTO
   The USPTO's own search of registered patent attorneys and agents.
3. Wysebridge — Patent law firm directory Wysebridge (publisher of this site)
   U.S. patent law firms, browsable by state, built from USPTO practitioner data.
4. Wysebridge Intelligence — Patent attorneys and agents by state Wysebridge (publisher of this site)
   Registered practitioner counts by state as of September 2026, built from monthly USPTO roster files.
5. Wysebridge — Patent agent vs patent attorney Wysebridge (publisher of this site)
   Role, pay and the path to each.
6. AIPLA 2025 Report of the Economic Survey American Intellectual Property Law Association
   The IP bar's own biennial survey of income and billing rates. Paid: $495 for non-members; free online to members.
7. USPTO fee schedule USPTO
   Current patent filing, search, examination and maintenance fees by entity size.