LexData-driven patent prosecution rankings you can trust.
The official, publicly available rankings for the Top 250 patent prosecution firms and attorneys. No nominations. No surveys. No pay-to-enter. Just the public USPTO record — and what it reveals about who is genuinely leading.
No login required. Free to view.
Built on Patexia’s analysis of USPTO PAIR data.
Every signal is computed from publicly available USPTO patent application records. Examiner bias and technology mix are normalized within cohorts. No surveys. No peer votes. Anyone can audit the math against the public record.
Ranked on activity. Measured on performance.
Six performance signals, drawn from over 20 extracted prosecution data points. Each signal is normalized within practice cohorts so that small specialty firms compete fairly with large generalist practices.
Filing volume
Total number of patent applications handled and patents successfully issued over the measurement window.
Participation frequency
How consistently a firm or attorney engages throughout the full prosecution process — from filing to issuance.
Client & technology breadth
Diversity and consistency of engagement across applicants, art units, and technology areas.
Success rate
Application-level and claim-level allowance rates, normalized for examiner severity and technology complexity.
Efficiency
Average pendency in days, number of office actions per allowance, and frequency of time extension requests.
Claim quality
Word-count ratios and structural deltas between original applications and issued patents — a proxy for prosecution-induced narrowing.
Rankings backed by the public record.
Most rankings ask you to make a case for yourself. We already have the evidence.
A credential earned by data, not pitched for.
If your firm or your name appears in the Top 100 of any official Patent Prosecution category, you are eligible to license the LexDana Patent Intelligence Badge — a publicly verifiable credential backed by the same data behind the rankings.
- Display the badge on your firm site, attorney bios, and practice pages
- Use it in RFP responses, pitch decks, and partner profiles
- Each badge links to your spotlight page with rank, score, and trend
- Annual recognition asset, updated when the next year’s rankings drop
Read the full Patent Prosecution methodology.
Signal definitions, cohort normalization, weighting, and the exact data window — all published.
Methodology →