Patent attorneys and agents by state
USPTO-registered patent practitioners by state as of September 2026, and the change since May 2006, the earliest USPTO roster.
- California: 9,580 registered practitioners (+80.5% since May 2006)
- Texas: 4,072 registered practitioners (+101.8% since May 2006)
- New York: 3,836 registered practitioners (+37.5% since May 2006)
- Illinois: 2,890 registered practitioners (+50.4% since May 2006)
- Massachusetts: 2,884 registered practitioners (+116.2% since May 2006)
- Virginia: 2,733 registered practitioners (+69.4% since May 2006)
- District of Columbia: 2,655 registered practitioners (+49.7% since May 2006)
- Pennsylvania: 1,902 registered practitioners (+50.4% since May 2006)
- New Jersey: 1,695 registered practitioners (+31.9% since May 2006)
- Ohio: 1,501 registered practitioners (+41.6% since May 2006)